189392771 has 2 divisors, whose sum is σ = 189392772. Its totient is φ = 189392770.

The previous prime is 189392761. The next prime is 189392813. The reversal of 189392771 is 177293981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189392771 - 2¹⁴ = 189376387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (189392761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94696385 + 94696386.

It is an arithmetic number, because the mean of its divisors is an integer number (94696386).

Almost surely, 2^189392771 is an apocalyptic number.

189392771 is a deficient number, since it is larger than the sum of its proper divisors (1).

189392771 is an equidigital number, since it uses as much as digits as its factorization.

189392771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 47.

The square root of 189392771 is about 13762.0046141541. The cubic root of 189392771 is about 574.2766162203.

The spelling of 189392771 in words is "one hundred eighty-nine million, three hundred ninety-two thousand, seven hundred seventy-one".