1137663731 has 2 divisors, whose sum is σ = 1137663732. Its totient is φ = 1137663730.

The previous prime is 1137663701. The next prime is 1137663733. The reversal of 1137663731 is 1373667311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1137663731 - 2¹⁴ = 1137647347 is a prime.

It is a super-2 number, since 2×1137663731² = 2588557529665680722, which contains 22 as substring.

Together with 1137663733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1137663733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568831865 + 568831866.

It is an arithmetic number, because the mean of its divisors is an integer number (568831866).

Almost surely, 2^1137663731 is an apocalyptic number.

1137663731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137663731 is an equidigital number, since it uses as much as digits as its factorization.

1137663731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 38.

The square root of 1137663731 is about 33729.2711305774. The cubic root of 1137663731 is about 1043.9298220493.

The spelling of 1137663731 in words is "one billion, one hundred thirty-seven million, six hundred sixty-three thousand, seven hundred thirty-one".