189992441 has 2 divisors, whose sum is σ = 189992442. Its totient is φ = 189992440.

The previous prime is 189992371. The next prime is 189992477. The reversal of 189992441 is 144299981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176996416 + 12996025 = 13304^2 + 3605^2 .

It is a cyclic number.

It is not a de Polignac number, because 189992441 - 2¹⁴ = 189976057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189992141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94996220 + 94996221.

It is an arithmetic number, because the mean of its divisors is an integer number (94996221).

Almost surely, 2^189992441 is an apocalyptic number.

It is an amenable number.

189992441 is a deficient number, since it is larger than the sum of its proper divisors (1).

189992441 is an equidigital number, since it uses as much as digits as its factorization.

189992441 is an evil number, because the sum of its binary digits is even.

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

The square root of 189992441 is about 13783.7745556143. The cubic root of 189992441 is about 574.8820839490.

The spelling of 189992441 in words is "one hundred eighty-nine million, nine hundred ninety-two thousand, four hundred forty-one".