381911404 has 12 divisors (see below), whose sum is σ = 763822864. Its totient is φ = 163676304.

The previous prime is 381911393. The next prime is 381911471. The reversal of 381911404 is 404119183.

381911404 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6819819 + ... + 6819874.

Almost surely, 2^381911404 is an apocalyptic number.

It is an amenable number.

381911404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

381911404 is a wasteful number, since it uses less digits than its factorization.

381911404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13639704 (or 13639702 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 381911404 is about 19542.5536714115. The cubic root of 381911404 is about 725.5280522410.

The spelling of 381911404 in words is "three hundred eighty-one million, nine hundred eleven thousand, four hundred four".