188889935522 has 18 divisors (see below), whose sum is σ = 285003229329. Its totient is φ = 93892100880.

The previous prime is 188889935513. The next prime is 188889935567. The reversal of 188889935522 is 225539988881.

It can be written as a sum of positive squares in 2 ways, for example, as 122304777841 + 66585157681 = 349721^2 + 258041^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=307319.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 117395054 + ... + 117396662.

Almost surely, 2^188889935522 is an apocalyptic number.

188889935522 is a deficient number, since it is larger than the sum of its proper divisors (96113293807).

188889935522 is an frugal number, since it uses more digits than its factorization.

188889935522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602 (or 1802 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 68.

The spelling of 188889935522 in words is "one hundred eighty-eight billion, eight hundred eighty-nine million, nine hundred thirty-five thousand, five hundred twenty-two".