2631991937 has 2 divisors, whose sum is σ = 2631991938. Its totient is φ = 2631991936.

The previous prime is 2631991933. The next prime is 2631991951. The reversal of 2631991937 is 7391991362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2630561521 + 1430416 = 51289^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 2631991937 - 2² = 2631991933 is a prime.

It is not a weakly prime, because it can be changed into another prime (2631991933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315995968 + 1315995969.

It is an arithmetic number, because the mean of its divisors is an integer number (1315995969).

Almost surely, 2^2631991937 is an apocalyptic number.

It is an amenable number.

2631991937 is a deficient number, since it is larger than the sum of its proper divisors (1).

2631991937 is an equidigital number, since it uses as much as digits as its factorization.

2631991937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 50.

The square root of 2631991937 is about 51302.9427713460. The cubic root of 2631991937 is about 1380.6857784898.

The spelling of 2631991937 in words is "two billion, six hundred thirty-one million, nine hundred ninety-one thousand, nine hundred thirty-seven".