37031989 has 2 divisors, whose sum is σ = 37031990. Its totient is φ = 37031988.

The previous prime is 37031983. The next prime is 37032019. The reversal of 37031989 is 98913073.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30360100 + 6671889 = 5510^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 37031989 - 2⁵ = 37031957 is a prime.

It is a super-2 number, since 2×37031989² = 2742736418592242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37031983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18515994 + 18515995.

It is an arithmetic number, because the mean of its divisors is an integer number (18515995).

Almost surely, 2^37031989 is an apocalyptic number.

It is an amenable number.

37031989 is a deficient number, since it is larger than the sum of its proper divisors (1).

37031989 is an equidigital number, since it uses as much as digits as its factorization.

37031989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 37031989 is about 6085.3914418055. The cubic root of 37031989 is about 333.3181885341.

The spelling of 37031989 in words is "thirty-seven million, thirty-one thousand, nine hundred eighty-nine".