380685618 has 48 divisors (see below), whose sum is σ = 851235840. Its totient is φ = 122888448.

The previous prime is 380685601. The next prime is 380685623. The reversal of 380685618 is 816586083.

380685618 is a `hidden beast` number, since 3 + 80 + 6 + 8 + 561 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79743 + ... + 84381.

It is an arithmetic number, because the mean of its divisors is an integer number (17734080).

Almost surely, 2^380685618 is an apocalyptic number.

380685618 is an abundant number, since it is smaller than the sum of its proper divisors (470550222).

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

380685618 is a wasteful number, since it uses less digits than its factorization.

380685618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4791 (or 4788 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 380685618 is about 19511.1664951125. The cubic root of 380685618 is about 724.7510000243.

The spelling of 380685618 in words is "three hundred eighty million, six hundred eighty-five thousand, six hundred eighteen".