188073664 has 28 divisors (see below), whose sum is σ = 383300224. Its totient is φ = 91494144.

The previous prime is 188073619. The next prime is 188073673. The reversal of 188073664 is 466370881.

It is a self number, because there is not a number n which added to its sum of digits gives 188073664.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37344 + ... + 42079.

Almost surely, 2^188073664 is an apocalyptic number.

It is an amenable number.

188073664 is an abundant number, since it is smaller than the sum of its proper divisors (195226560).

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

188073664 is an equidigital number, since it uses as much as digits as its factorization.

188073664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79472 (or 79462 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 188073664 is about 13713.9951873989. The cubic root of 188073664 is about 572.9402437413.

The spelling of 188073664 in words is "one hundred eighty-eight million, seventy-three thousand, six hundred sixty-four".