1385500656 has 20 divisors (see below), whose sum is σ = 3579210152. Its totient is φ = 461833536.

The previous prime is 1385500619. The next prime is 1385500687. The reversal of 1385500656 is 6560055831.

It is a super-2 number, since 2×1385500656² = 3839224135552860672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14432251 + ... + 14432346.

Almost surely, 2^1385500656 is an apocalyptic number.

1385500656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1385500656 is an abundant number, since it is smaller than the sum of its proper divisors (2193709496).

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

1385500656 is a wasteful number, since it uses less digits than its factorization.

1385500656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28864608 (or 28864602 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 1385500656 is about 37222.3139527891. The cubic root of 1385500656 is about 1114.8135667969.

The spelling of 1385500656 in words is "one billion, three hundred eighty-five million, five hundred thousand, six hundred fifty-six".