189613523 has 16 divisors (see below), whose sum is σ = 211818240. Its totient is φ = 168285600.

The previous prime is 189613519. The next prime is 189613537. The reversal of 189613523 is 325316981.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 189613523 - 2² = 189613519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189613553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82433 + ... + 84701.

It is an arithmetic number, because the mean of its divisors is an integer number (13238640).

Almost surely, 2^189613523 is an apocalyptic number.

189613523 is a deficient number, since it is larger than the sum of its proper divisors (22204717).

189613523 is a wasteful number, since it uses less digits than its factorization.

189613523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458.

The product of its digits is 38880, while the sum is 38.

The square root of 189613523 is about 13770.0226216227. The cubic root of 189613523 is about 574.4996509368.

The spelling of 189613523 in words is "one hundred eighty-nine million, six hundred thirteen thousand, five hundred twenty-three".