186064816 has 20 divisors (see below), whose sum is σ = 412000912. Its totient is φ = 79742016.

The previous prime is 186064771. The next prime is 186064843. The reversal of 186064816 is 618460681.

It is a super-2 number, since 2×186064816² = 69240231506227712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830535 + ... + 830758.

Almost surely, 2^186064816 is an apocalyptic number.

186064816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

186064816 is an abundant number, since it is smaller than the sum of its proper divisors (225936096).

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

186064816 is a wasteful number, since it uses less digits than its factorization.

186064816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661308 (or 1661302 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 186064816 is about 13640.5577598572. The cubic root of 186064816 is about 570.8930455636.

The spelling of 186064816 in words is "one hundred eighty-six million, sixty-four thousand, eight hundred sixteen".