166147199 has 2 divisors, whose sum is σ = 166147200. Its totient is φ = 166147198.

The previous prime is 166147181. The next prime is 166147207. The reversal of 166147199 is 991741661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166147199 - 2⁸ = 166146943 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166147099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83073599 + 83073600.

It is an arithmetic number, because the mean of its divisors is an integer number (83073600).

Almost surely, 2^166147199 is an apocalyptic number.

166147199 is a deficient number, since it is larger than the sum of its proper divisors (1).

166147199 is an equidigital number, since it uses as much as digits as its factorization.

166147199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 166147199 is about 12889.8098899867. The cubic root of 166147199 is about 549.7488649612.

The spelling of 166147199 in words is "one hundred sixty-six million, one hundred forty-seven thousand, one hundred ninety-nine".