37906961 has 2 divisors, whose sum is σ = 37906962. Its totient is φ = 37906960.

The previous prime is 37906943. The next prime is 37906993. The reversal of 37906961 is 16960973.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23580736 + 14326225 = 4856^2 + 3785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37906961 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (37906901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18953480 + 18953481.

It is an arithmetic number, because the mean of its divisors is an integer number (18953481).

Almost surely, 2^37906961 is an apocalyptic number.

It is an amenable number.

37906961 is a deficient number, since it is larger than the sum of its proper divisors (1).

37906961 is an equidigital number, since it uses as much as digits as its factorization.

37906961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 37906961 is about 6156.8629187274. The cubic root of 37906961 is about 335.9229350137.

The spelling of 37906961 in words is "thirty-seven million, nine hundred six thousand, nine hundred sixty-one".