188113239531844 has 81 divisors (see below), whose sum is σ = 364705824433503. Its totient is φ = 84835470205200.

The previous prime is 188113239531757. The next prime is 188113239531869. The reversal of 188113239531844 is 448135932311881.

It is a happy number.

The square root of 188113239531844 is 13715438.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 39527889937 + ... + 39527894695.

Almost surely, 2^{188113239531844} is an apocalyptic number.

188113239531844 is the 13715438-th square number.

It is an amenable number.

188113239531844 is a deficient number, since it is larger than the sum of its proper divisors (176592584901659).

188113239531844 is an frugal number, since it uses more digits than its factorization.

188113239531844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9806 (or 4903 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 61.

The spelling of 188113239531844 in words is "one hundred eighty-eight trillion, one hundred thirteen billion, two hundred thirty-nine million, five hundred thirty-one thousand, eight hundred forty-four".