381835656 has 48 divisors (see below), whose sum is σ = 1042058160. Its totient is φ = 126303840.

The previous prime is 381835621. The next prime is 381835681. The reversal of 381835656 is 656538183.

381835656 is a `hidden beast` number, since 3 + 8 + 1 + 83 + 565 + 6 = 666.

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, 10810 + ... + 29673.

It is an arithmetic number, because the mean of its divisors is an integer number (21709545).

Almost surely, 2^381835656 is an apocalyptic number.

381835656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381835656 is an abundant number, since it is smaller than the sum of its proper divisors (660222504).

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

381835656 is a wasteful number, since it uses less digits than its factorization.

381835656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40626 (or 40619 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 381835656 is about 19540.6155481346. The cubic root of 381835656 is about 725.4800821864.

The spelling of 381835656 in words is "three hundred eighty-one million, eight hundred thirty-five thousand, six hundred fifty-six".