189452719 has 2 divisors, whose sum is σ = 189452720. Its totient is φ = 189452718.

The previous prime is 189452701. The next prime is 189452773. The reversal of 189452719 is 917254981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189452719 is a prime.

It is a super-2 number, since 2×189452719² = 71784665472985922, 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 (189452789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94726359 + 94726360.

It is an arithmetic number, because the mean of its divisors is an integer number (94726360).

Almost surely, 2^189452719 is an apocalyptic number.

189452719 is a deficient number, since it is larger than the sum of its proper divisors (1).

189452719 is an equidigital number, since it uses as much as digits as its factorization.

189452719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 46.

The square root of 189452719 is about 13764.1824675496. The cubic root of 189452719 is about 574.3372012551.

The spelling of 189452719 in words is "one hundred eighty-nine million, four hundred fifty-two thousand, seven hundred nineteen".