381158886 has 16 divisors (see below), whose sum is σ = 802440000. Its totient is φ = 120365928.

The previous prime is 381158849. The next prime is 381158891. The reversal of 381158886 is 688851183.

It is a congruent number.

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, 1671636 + ... + 1671863.

It is an arithmetic number, because the mean of its divisors is an integer number (50152500).

Almost surely, 2^381158886 is an apocalyptic number.

381158886 is an abundant number, since it is smaller than the sum of its proper divisors (421281114).

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

381158886 is a wasteful number, since it uses less digits than its factorization.

381158886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343523.

The product of its digits is 368640, while the sum is 48.

The square root of 381158886 is about 19523.2908598935. The cubic root of 381158886 is about 725.0512122365.

The spelling of 381158886 in words is "three hundred eighty-one million, one hundred fifty-eight thousand, eight hundred eighty-six".