1565464460 has 96 divisors (see below), whose sum is σ = 3869171712. Its totient is φ = 520865280.

The previous prime is 1565464451. The next prime is 1565464469. The reversal of 1565464460 is 644645651.

It is an interprime number because it is at equal distance from previous prime (1565464451) and next prime (1565464469).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (1565464469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1279409 + ... + 1280631.

It is an arithmetic number, because the mean of its divisors is an integer number (40303872).

Almost surely, 2^1565464460 is an apocalyptic number.

1565464460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1565464460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1934585856).

1565464460 is an abundant number, since it is smaller than the sum of its proper divisors (2303707252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1565464460 is a wasteful number, since it uses less digits than its factorization.

1565464460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 1565464460 is about 39565.9507657784. The cubic root of 1565464460 is about 1161.1306010242.

The spelling of 1565464460 in words is "one billion, five hundred sixty-five million, four hundred sixty-four thousand, four hundred sixty".