189853231 has 2 divisors, whose sum is σ = 189853232. Its totient is φ = 189853230.

The previous prime is 189853199. The next prime is 189853241. The reversal of 189853231 is 132358981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189853231 - 2⁵ = 189853199 is a prime.

It is a super-2 number, since 2×189853231² = 72088498642278722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189853241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94926615 + 94926616.

It is an arithmetic number, because the mean of its divisors is an integer number (94926616).

Almost surely, 2^189853231 is an apocalyptic number.

189853231 is a deficient number, since it is larger than the sum of its proper divisors (1).

189853231 is an equidigital number, since it uses as much as digits as its factorization.

189853231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 189853231 is about 13778.7238523747. The cubic root of 189853231 is about 574.7416417141.

The spelling of 189853231 in words is "one hundred eighty-nine million, eight hundred fifty-three thousand, two hundred thirty-one".