1316563280 has 80 divisors (see below), whose sum is σ = 3118086144. Its totient is φ = 516902400.

The previous prime is 1316563271. The next prime is 1316563289. The reversal of 1316563280 is 823656131.

It is an interprime number because it is at equal distance from previous prime (1316563271) and next prime (1316563289).

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1316563280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316563289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1025519 + ... + 1026801.

Almost surely, 2^1316563280 is an apocalyptic number.

1316563280 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 1316563280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559043072).

1316563280 is an abundant number, since it is smaller than the sum of its proper divisors (1801522864).

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

1316563280 is a wasteful number, since it uses less digits than its factorization.

1316563280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1316563280 is about 36284.4771217665. The cubic root of 1316563280 is about 1096.0084757900.

The spelling of 1316563280 in words is "one billion, three hundred sixteen million, five hundred sixty-three thousand, two hundred eighty".