37492991 has 2 divisors, whose sum is σ = 37492992. Its totient is φ = 37492990.

The previous prime is 37492963. The next prime is 37493011. The reversal of 37492991 is 19929473.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 37492991 - 2¹⁸ = 37230847 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_2289959 and since 37492991 and 2289959 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37492591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18746495 + 18746496.

It is an arithmetic number, because the mean of its divisors is an integer number (18746496).

Almost surely, 2^37492991 is an apocalyptic number.

37492991 is a deficient number, since it is larger than the sum of its proper divisors (1).

37492991 is an equidigital number, since it uses as much as digits as its factorization.

37492991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 37492991 is about 6123.1520477610. The cubic root of 37492991 is about 334.6956201615.

It can be divided in two parts, 37492 and 991, that added together give a palindrome (38483).

The spelling of 37492991 in words is "thirty-seven million, four hundred ninety-two thousand, nine hundred ninety-one".