16169041909 has 2 divisors, whose sum is σ = 16169041910. Its totient is φ = 16169041908.

The previous prime is 16169041877. The next prime is 16169041913. The reversal of 16169041909 is 90914096161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11520802225 + 4648239684 = 107335^2 + 68178^2 .

It is a cyclic number.

It is not a de Polignac number, because 16169041909 - 2⁵ = 16169041877 is a prime.

It is a super-2 number, since 2×16169041909² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16169041979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8084520954 + 8084520955.

It is an arithmetic number, because the mean of its divisors is an integer number (8084520955).

Almost surely, 2^16169041909 is an apocalyptic number.

It is an amenable number.

16169041909 is a deficient number, since it is larger than the sum of its proper divisors (1).

16169041909 is an equidigital number, since it uses as much as digits as its factorization.

16169041909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 16169041909 in words is "sixteen billion, one hundred sixty-nine million, forty-one thousand, nine hundred nine".