189571769 has 2 divisors, whose sum is σ = 189571770. Its totient is φ = 189571768.

The previous prime is 189571763. The next prime is 189571783. The reversal of 189571769 is 967175981.

189571769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127351225 + 62220544 = 11285^2 + 7888^2 .

It is a cyclic number.

It is not a de Polignac number, because 189571769 - 2¹² = 189567673 is a prime.

It is a super-2 number, since 2×189571769² = 71874911203578722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189571769.

It is not a weakly prime, because it can be changed into another prime (189571763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94785884 + 94785885.

It is an arithmetic number, because the mean of its divisors is an integer number (94785885).

Almost surely, 2^189571769 is an apocalyptic number.

It is an amenable number.

189571769 is a deficient number, since it is larger than the sum of its proper divisors (1).

189571769 is an equidigital number, since it uses as much as digits as its factorization.

189571769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 53.

The square root of 189571769 is about 13768.5064186352. The cubic root of 189571769 is about 574.4574784535.

The spelling of 189571769 in words is "one hundred eighty-nine million, five hundred seventy-one thousand, seven hundred sixty-nine".