381318358842 has 24 divisors (see below), whose sum is σ = 826206608916. Its totient is φ = 127103530176.

The previous prime is 381318358807. The next prime is 381318358903. The reversal of 381318358842 is 248853813183.

381318358842 is a `hidden beast` number, since 3 + 8 + 1 + 3 + 18 + 3 + 588 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 372589380801 + 8728978041 = 610401^2 + 93429^2 .

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, 829038 + ... + 1204134.

Almost surely, 2^381318358842 is an apocalyptic number.

381318358842 is an abundant number, since it is smaller than the sum of its proper divisors (444888250074).

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

381318358842 is a wasteful number, since it uses less digits than its factorization.

381318358842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431582 (or 431579 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The spelling of 381318358842 in words is "three hundred eighty-one billion, three hundred eighteen million, three hundred fifty-eight thousand, eight hundred forty-two".