3138161909 has 2 divisors, whose sum is σ = 3138161910. Its totient is φ = 3138161908.

The previous prime is 3138161839. The next prime is 3138161911. The reversal of 3138161909 is 9091618313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2130099409 + 1008062500 = 46153^2 + 31750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3138161909 is a prime.

Together with 3138161911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3138161969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569080954 + 1569080955.

It is an arithmetic number, because the mean of its divisors is an integer number (1569080955).

Almost surely, 2^3138161909 is an apocalyptic number.

It is an amenable number.

3138161909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138161909 is an equidigital number, since it uses as much as digits as its factorization.

3138161909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 3138161909 is about 56019.2994333203. The cubic root of 3138161909 is about 1464.0585624411.

The spelling of 3138161909 in words is "three billion, one hundred thirty-eight million, one hundred sixty-one thousand, nine hundred nine".