189944523 has 6 divisors (see below), whose sum is σ = 274364324. Its totient is φ = 126629676.

The previous prime is 189944507. The next prime is 189944537. The reversal of 189944523 is 325449981.

189944523 is a `hidden beast` number, since 1 + 89 + 9 + 44 + 523 = 666.

189944523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189944523 - 2⁴ = 189944507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189944593) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10552465 + ... + 10552482.

Almost surely, 2^189944523 is an apocalyptic number.

189944523 is a deficient number, since it is larger than the sum of its proper divisors (84419801).

189944523 is a wasteful number, since it uses less digits than its factorization.

189944523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21104953 (or 21104950 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 189944523 is about 13782.0362428779. The cubic root of 189944523 is about 574.8337495420.

The spelling of 189944523 in words is "one hundred eighty-nine million, nine hundred forty-four thousand, five hundred twenty-three".