1538648856 has 48 divisors (see below), whose sum is σ = 4169725560. Its totient is φ = 512568960.

The previous prime is 1538648831. The next prime is 1538648863. The reversal of 1538648856 is 6588468351.

1538648856 is a `hidden beast` number, since 153 + 8 + 6 + 488 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132151 + ... + 143321.

Almost surely, 2^1538648856 is an apocalyptic number.

It is an amenable number.

1538648856 is an abundant number, since it is smaller than the sum of its proper divisors (2631076704).

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

1538648856 is a wasteful number, since it uses less digits than its factorization.

1538648856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13096 (or 13089 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The square root of 1538648856 is about 39225.6147944172. The cubic root of 1538648856 is about 1154.4625238617.

The spelling of 1538648856 in words is "one billion, five hundred thirty-eight million, six hundred forty-eight thousand, eight hundred fifty-six".