3138161969 has 2 divisors, whose sum is σ = 3138161970. Its totient is φ = 3138161968.

The previous prime is 3138161953. The next prime is 3138161981. The reversal of 3138161969 is 9691618313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2424577600 + 713584369 = 49240^2 + 26713^2 .

It is a cyclic number.

It is not a de Polignac number, because 3138161969 - 2⁴ = 3138161953 is a prime.

It is a super-2 number, since 2×3138161969² = 19696121087355913922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3138161909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569080984 + 1569080985.

It is an arithmetic number, because the mean of its divisors is an integer number (1569080985).

Almost surely, 2^3138161969 is an apocalyptic number.

It is an amenable number.

3138161969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138161969 is an equidigital number, since it uses as much as digits as its factorization.

3138161969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 3138161969 is about 56019.2999688500. The cubic root of 3138161969 is about 1464.0585717718.

The spelling of 3138161969 in words is "three billion, one hundred thirty-eight million, one hundred sixty-one thousand, nine hundred sixty-nine".