3815631137 has 2 divisors, whose sum is σ = 3815631138. Its totient is φ = 3815631136.

The previous prime is 3815631013. The next prime is 3815631139. The reversal of 3815631137 is 7311365183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3159451681 + 656179456 = 56209^2 + 25616^2 .

It is a cyclic number.

It is not a de Polignac number, because 3815631137 - 2¹⁴ = 3815614753 is a prime.

Together with 3815631139, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3815631137.

It is not a weakly prime, because it can be changed into another prime (3815631139) 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, 1907815568 + 1907815569.

It is an arithmetic number, because the mean of its divisors is an integer number (1907815569).

Almost surely, 2^3815631137 is an apocalyptic number.

It is an amenable number.

3815631137 is a deficient number, since it is larger than the sum of its proper divisors (1).

3815631137 is an equidigital number, since it uses as much as digits as its factorization.

3815631137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 3815631137 is about 61770.7951786279. The cubic root of 3815631137 is about 1562.6274941684.

The spelling of 3815631137 in words is "three billion, eight hundred fifteen million, six hundred thirty-one thousand, one hundred thirty-seven".