189886793 has 2 divisors, whose sum is σ = 189886794. Its totient is φ = 189886792.

The previous prime is 189886769. The next prime is 189886843. The reversal of 189886793 is 397688981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147792649 + 42094144 = 12157^2 + 6488^2 .

It is a cyclic number.

It is not a de Polignac number, because 189886793 - 2¹⁴ = 189870409 is a prime.

It is not a weakly prime, because it can be changed into another prime (189886493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94943396 + 94943397.

It is an arithmetic number, because the mean of its divisors is an integer number (94943397).

Almost surely, 2^189886793 is an apocalyptic number.

It is an amenable number.

189886793 is a deficient number, since it is larger than the sum of its proper divisors (1).

189886793 is an equidigital number, since it uses as much as digits as its factorization.

189886793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 59.

The square root of 189886793 is about 13779.9416907329. The cubic root of 189886793 is about 574.7755070713.

The spelling of 189886793 in words is "one hundred eighty-nine million, eight hundred eighty-six thousand, seven hundred ninety-three".