381365394 has 16 divisors (see below), whose sum is σ = 770595168. Its totient is φ = 125811072.

The previous prime is 381365381. The next prime is 381365429. The reversal of 381365394 is 493563183.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327052 + ... + 328215.

It is an arithmetic number, because the mean of its divisors is an integer number (48162198).

Almost surely, 2^381365394 is an apocalyptic number.

381365394 is an abundant number, since it is smaller than the sum of its proper divisors (389229774).

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

381365394 is a wasteful number, since it uses less digits than its factorization.

381365394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655369.

The product of its digits is 233280, while the sum is 42.

The square root of 381365394 is about 19528.5789037503. The cubic root of 381365394 is about 725.1821303819.

The spelling of 381365394 in words is "three hundred eighty-one million, three hundred sixty-five thousand, three hundred ninety-four".