188994657715 has 16 divisors (see below), whose sum is σ = 227609606016. Its totient is φ = 150652656000.

The previous prime is 188994657703. The next prime is 188994657721. The reversal of 188994657715 is 517756499881.

188994657715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 188994657715 - 2⁷ = 188994657587 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564585 + ... + 1681045.

It is an arithmetic number, because the mean of its divisors is an integer number (14225600376).

Almost surely, 2^188994657715 is an apocalyptic number.

188994657715 is a deficient number, since it is larger than the sum of its proper divisors (38614948301).

188994657715 is a wasteful number, since it uses less digits than its factorization.

188994657715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117630.

The product of its digits is 152409600, while the sum is 70.

The spelling of 188994657715 in words is "one hundred eighty-eight billion, nine hundred ninety-four million, six hundred fifty-seven thousand, seven hundred fifteen".