163146409 has 2 divisors, whose sum is σ = 163146410. Its totient is φ = 163146408.

The previous prime is 163146323. The next prime is 163146413. The reversal of 163146409 is 904641361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104960025 + 58186384 = 10245^2 + 7628^2 .

It is a cyclic number.

It is not a de Polignac number, because 163146409 - 2⁷ = 163146281 is a prime.

It is not a weakly prime, because it can be changed into another prime (163146469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81573204 + 81573205.

It is an arithmetic number, because the mean of its divisors is an integer number (81573205).

Almost surely, 2^163146409 is an apocalyptic number.

It is an amenable number.

163146409 is a deficient number, since it is larger than the sum of its proper divisors (1).

163146409 is an equidigital number, since it uses as much as digits as its factorization.

163146409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 163146409 is about 12772.8778667926. The cubic root of 163146409 is about 546.4190597792.

The spelling of 163146409 in words is "one hundred sixty-three million, one hundred forty-six thousand, four hundred nine".