189430319 has 12 divisors (see below), whose sum is σ = 206953656. Its totient is φ = 172339728.

The previous prime is 189430309. The next prime is 189430327. The reversal of 189430319 is 913034981.

It is a happy number.

It is not a de Polignac number, because 189430319 - 2⁸ = 189430063 is a prime.

It is a super-2 number, since 2×189430319² = 71767691512883522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189430309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451892 + ... + 452310.

It is an arithmetic number, because the mean of its divisors is an integer number (17246138).

Almost surely, 2^189430319 is an apocalyptic number.

189430319 is a deficient number, since it is larger than the sum of its proper divisors (17523337).

189430319 is an frugal number, since it uses more digits than its factorization.

189430319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 189430319 is about 13763.3687373404. The cubic root of 189430319 is about 574.3145647182.

The spelling of 189430319 in words is "one hundred eighty-nine million, four hundred thirty thousand, three hundred nineteen".