189524969 has 2 divisors, whose sum is σ = 189524970. Its totient is φ = 189524968.

The previous prime is 189524957. The next prime is 189525043. The reversal of 189524969 is 969425981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97614400 + 91910569 = 9880^2 + 9587^2 .

It is a cyclic number.

It is not a de Polignac number, because 189524969 - 2⁴ = 189524953 is a prime.

It is a super-2 number, since 2×189524969² = 71839427748901922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 189524969.

It is not a weakly prime, because it can be changed into another prime (189524369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94762484 + 94762485.

It is an arithmetic number, because the mean of its divisors is an integer number (94762485).

Almost surely, 2^189524969 is an apocalyptic number.

It is an amenable number.

189524969 is a deficient number, since it is larger than the sum of its proper divisors (1).

189524969 is an equidigital number, since it uses as much as digits as its factorization.

189524969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 53.

The square root of 189524969 is about 13766.8067829835. The cubic root of 189524969 is about 574.4102020354.

The spelling of 189524969 in words is "one hundred eighty-nine million, five hundred twenty-four thousand, nine hundred sixty-nine".