1565493672 has 32 divisors (see below), whose sum is σ = 3997008000. Its totient is φ = 510728064.

The previous prime is 1565493667. The next prime is 1565493703. The reversal of 1565493672 is 2763945651.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 692797 + ... + 695052.

It is an arithmetic number, because the mean of its divisors is an integer number (124906500).

Almost surely, 2^1565493672 is an apocalyptic number.

1565493672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1565493672 is an abundant number, since it is smaller than the sum of its proper divisors (2431514328).

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

1565493672 is a wasteful number, since it uses less digits than its factorization.

1565493672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387905 (or 1387901 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 48.

The square root of 1565493672 is about 39566.3199198510. The cubic root of 1565493672 is about 1161.1378233187.

The spelling of 1565493672 in words is "one billion, five hundred sixty-five million, four hundred ninety-three thousand, six hundred seventy-two".