189236092328721 has 27 divisors (see below), whose sum is σ = 283841388525513. Its totient is φ = 126156652045020.

The previous prime is 189236092328711. The next prime is 189236092328741. The reversal of 189236092328721 is 127823290632981.

The square root of 189236092328721 is 13756311.

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

189236092328721 is a `hidden beast` number, since 1 + 8 + 9 + 236 + 0 + 9 + 2 + 328 + 72 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (27).

It is not a de Polignac number, because 189236092328721 - 2²⁷ = 189235958110993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189236092328711) 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, 1114176276 + ... + 1114346106.

Almost surely, 2^{189236092328721} is an apocalyptic number.

189236092328721 is the 13756311-st square number.

189236092328721 is the 6878156-th centered octagonal number.

It is an amenable number.

189236092328721 is a deficient number, since it is larger than the sum of its proper divisors (94605296196792).

189236092328721 is an frugal number, since it uses more digits than its factorization.

189236092328721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339686 (or 169834 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 189236092328721 in words is "one hundred eighty-nine trillion, two hundred thirty-six billion, ninety-two million, three hundred twenty-eight thousand, seven hundred twenty-one".