37722731 has 2 divisors, whose sum is σ = 37722732. Its totient is φ = 37722730.

The previous prime is 37722679. The next prime is 37722749. The reversal of 37722731 is 13722773.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 37722731 - 2⁶ = 37722667 is a prime.

It is a super-2 number, since 2×37722731² = 2846008868196722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37722781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18861365 + 18861366.

It is an arithmetic number, because the mean of its divisors is an integer number (18861366).

Almost surely, 2^37722731 is an apocalyptic number.

37722731 is a deficient number, since it is larger than the sum of its proper divisors (1).

37722731 is an equidigital number, since it uses as much as digits as its factorization.

37722731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 32.

The square root of 37722731 is about 6141.8833430797. The cubic root of 37722731 is about 335.3778494453.

The spelling of 37722731 in words is "thirty-seven million, seven hundred twenty-two thousand, seven hundred thirty-one".