6410400169 has 2 divisors, whose sum is σ = 6410400170. Its totient is φ = 6410400168.

The previous prime is 6410400133. The next prime is 6410400179. The reversal of 6410400169 is 9610040146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4995662400 + 1414737769 = 70680^2 + 37613^2 .

It is a cyclic number.

It is not a de Polignac number, because 6410400169 - 2⁹ = 6410399657 is a prime.

It is a super-2 number, since 2×6410400169² = 82186460653430457122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6410400169.

It is not a weakly prime, because it can be changed into another prime (6410400119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3205200084 + 3205200085.

It is an arithmetic number, because the mean of its divisors is an integer number (3205200085).

Almost surely, 2^6410400169 is an apocalyptic number.

It is an amenable number.

6410400169 is a deficient number, since it is larger than the sum of its proper divisors (1).

6410400169 is an equidigital number, since it uses as much as digits as its factorization.

6410400169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 6410400169 is about 80064.9746705761. The cubic root of 6410400169 is about 1857.6406830995.

The spelling of 6410400169 in words is "six billion, four hundred ten million, four hundred thousand, one hundred sixty-nine".