189698231 has 4 divisors (see below), whose sum is σ = 189727512. Its totient is φ = 189668952.

The previous prime is 189698221. The next prime is 189698237. The reversal of 189698231 is 132896981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132896981 = 7 ⋅18985283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189698231 is a prime.

It is a super-2 number, since 2×189698231² = 71970837689058722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189698237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 19478.

It is an arithmetic number, because the mean of its divisors is an integer number (47431878).

Almost surely, 2^189698231 is an apocalyptic number.

189698231 is a deficient number, since it is larger than the sum of its proper divisors (29281).

189698231 is an equidigital number, since it uses as much as digits as its factorization.

189698231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29280.

The product of its digits is 186624, while the sum is 47.

The square root of 189698231 is about 13773.0980901176. The cubic root of 189698231 is about 574.5851889136.

The spelling of 189698231 in words is "one hundred eighty-nine million, six hundred ninety-eight thousand, two hundred thirty-one".