381965904 has 60 divisors (see below), whose sum is σ = 1093851616. Its totient is φ = 124358976.

The previous prime is 381965897. The next prime is 381965933. The reversal of 381965904 is 409569183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 381965904.

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, 24652 + ... + 37035.

Almost surely, 2^381965904 is an apocalyptic number.

It is an amenable number.

381965904 is an abundant number, since it is smaller than the sum of its proper divisors (711885712).

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

381965904 is a wasteful number, since it uses less digits than its factorization.

381965904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61744 (or 61735 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 381965904 is about 19543.9480146668. The cubic root of 381965904 is about 725.5625623374.

It can be divided in two parts, 38196 and 5904, that added together give a square (44100 = 210²).

The spelling of 381965904 in words is "three hundred eighty-one million, nine hundred sixty-five thousand, nine hundred four".