381630964 has 48 divisors (see below), whose sum is σ = 795747456. Its totient is φ = 157852800.

The previous prime is 381630959. The next prime is 381630983. The reversal of 381630964 is 469036183.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35914 + ... + 45310.

It is an arithmetic number, because the mean of its divisors is an integer number (16578072).

Almost surely, 2^381630964 is an apocalyptic number.

It is an amenable number.

381630964 is an abundant number, since it is smaller than the sum of its proper divisors (414116492).

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

381630964 is a wasteful number, since it uses less digits than its factorization.

381630964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9496 (or 9494 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 381630964 is about 19535.3772423263. The cubic root of 381630964 is about 725.3504221174.

The spelling of 381630964 in words is "three hundred eighty-one million, six hundred thirty thousand, nine hundred sixty-four".