189316793 has 2 divisors, whose sum is σ = 189316794. Its totient is φ = 189316792.

The previous prime is 189316691. The next prime is 189316801. The reversal of 189316793 is 397613981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186923584 + 2393209 = 13672^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 189316793 - 2⁸ = 189316537 is a prime.

It is a super-2 number, since 2×189316793² = 71681696223609698, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (189336793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94658396 + 94658397.

It is an arithmetic number, because the mean of its divisors is an integer number (94658397).

Almost surely, 2^189316793 is an apocalyptic number.

It is an amenable number.

189316793 is a deficient number, since it is larger than the sum of its proper divisors (1).

189316793 is an equidigital number, since it uses as much as digits as its factorization.

189316793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The square root of 189316793 is about 13759.2439109131. The cubic root of 189316793 is about 574.1998124710.

The spelling of 189316793 in words is "one hundred eighty-nine million, three hundred sixteen thousand, seven hundred ninety-three".