189319799 has 2 divisors, whose sum is σ = 189319800. Its totient is φ = 189319798.

The previous prime is 189319747. The next prime is 189319813. The reversal of 189319799 is 997913981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189319799 - 2²⁴ = 172542583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189319729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94659899 + 94659900.

It is an arithmetic number, because the mean of its divisors is an integer number (94659900).

Almost surely, 2^189319799 is an apocalyptic number.

189319799 is a deficient number, since it is larger than the sum of its proper divisors (1).

189319799 is an equidigital number, since it uses as much as digits as its factorization.

189319799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 56.

The square root of 189319799 is about 13759.3531461330. The cubic root of 189319799 is about 574.2028515314.

The spelling of 189319799 in words is "one hundred eighty-nine million, three hundred nineteen thousand, seven hundred ninety-nine".