188761574089 has 27 divisors (see below), whose sum is σ = 209802908973. Its totient is φ = 169702810200.

The previous prime is 188761574083. The next prime is 188761574117. The reversal of 188761574089 is 980475167881.

The square root of 188761574089 is 434467.

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

It is not a de Polignac number, because 188761574089 - 2²⁵ = 188728019657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 188761574089.

It is not an unprimeable number, because it can be changed into a prime (188761574083) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 606950244 + ... + 606950554.

Almost surely, 2^188761574089 is an apocalyptic number.

188761574089 is the 434467-th square number.

188761574089 is the 217234-th centered octagonal number.

It is an amenable number.

188761574089 is a deficient number, since it is larger than the sum of its proper divisors (21041334884).

188761574089 is an frugal number, since it uses more digits than its factorization.

188761574089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 64.

Multiplying 188761574089 by its sum of digits (64), we get a square (12080740741696 = 3475736²).

The spelling of 188761574089 in words is "one hundred eighty-eight billion, seven hundred sixty-one million, five hundred seventy-four thousand, eighty-nine".