381913764 has 24 divisors (see below), whose sum is σ = 899310720. Its totient is φ = 126136224.

The previous prime is 381913751. The next prime is 381913771. The reversal of 381913764 is 467319183.

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 7 ways as a sum of consecutive naturals, for example, 144684 + ... + 147299.

It is an arithmetic number, because the mean of its divisors is an integer number (37471280).

Almost surely, 2^381913764 is an apocalyptic number.

It is an amenable number.

381913764 is an abundant number, since it is smaller than the sum of its proper divisors (517396956).

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

381913764 is a wasteful number, since it uses less digits than its factorization.

381913764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292099 (or 292097 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 381913764 is about 19542.6140523728. The cubic root of 381913764 is about 725.5295466912.

The spelling of 381913764 in words is "three hundred eighty-one million, nine hundred thirteen thousand, seven hundred sixty-four".