389618670 has 32 divisors (see below), whose sum is σ = 1068668928. Its totient is φ = 89055648.

The previous prime is 389618641. The next prime is 389618707. The reversal of 389618670 is 76816983.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927454 + ... + 927873.

It is an arithmetic number, because the mean of its divisors is an integer number (33395904).

Almost surely, 2^389618670 is an apocalyptic number.

389618670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389618670 is an abundant number, since it is smaller than the sum of its proper divisors (679050258).

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

389618670 is a wasteful number, since it uses less digits than its factorization.

389618670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855344.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 389618670 is about 19738.7605993892. The cubic root of 389618670 is about 730.3761556746.

The spelling of 389618670 in words is "three hundred eighty-nine million, six hundred eighteen thousand, six hundred seventy".