188964145947 has 32 divisors (see below), whose sum is σ = 255558983680. Its totient is φ = 124187696640.

The previous prime is 188964145891. The next prime is 188964145987. The reversal of 188964145947 is 749541469881.

It is not a de Polignac number, because 188964145947 - 2⁸ = 188964145691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188964145987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49817283 + ... + 49821075.

It is an arithmetic number, because the mean of its divisors is an integer number (7986218240).

Almost surely, 2^188964145947 is an apocalyptic number.

188964145947 is a deficient number, since it is larger than the sum of its proper divisors (66594837733).

188964145947 is a wasteful number, since it uses less digits than its factorization.

188964145947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723.

The product of its digits is 69672960, while the sum is 66.

The spelling of 188964145947 in words is "one hundred eighty-eight billion, nine hundred sixty-four million, one hundred forty-five thousand, nine hundred forty-seven".