199674731 has 2 divisors, whose sum is σ = 199674732. Its totient is φ = 199674730.

The previous prime is 199674653. The next prime is 199674737. The reversal of 199674731 is 137476991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199674731 - 2¹⁰ = 199673707 is a prime.

It is a super-2 number, since 2×199674731² = 79739996399844722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (199674737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99837365 + 99837366.

It is an arithmetic number, because the mean of its divisors is an integer number (99837366).

Almost surely, 2^199674731 is an apocalyptic number.

199674731 is a deficient number, since it is larger than the sum of its proper divisors (1).

199674731 is an equidigital number, since it uses as much as digits as its factorization.

199674731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 199674731 is about 14130.6309484043. The cubic root of 199674731 is about 584.4863448447.

The spelling of 199674731 in words is "one hundred ninety-nine million, six hundred seventy-four thousand, seven hundred thirty-one".