37994461 has 2 divisors, whose sum is σ = 37994462. Its totient is φ = 37994460.

The previous prime is 37994431. The next prime is 37994479. The reversal of 37994461 is 16449973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32205625 + 5788836 = 5675^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 37994461 - 2¹³ = 37986269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37994431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18997230 + 18997231.

It is an arithmetic number, because the mean of its divisors is an integer number (18997231).

Almost surely, 2^37994461 is an apocalyptic number.

It is an amenable number.

37994461 is a deficient number, since it is larger than the sum of its proper divisors (1).

37994461 is an equidigital number, since it uses as much as digits as its factorization.

37994461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 37994461 is about 6163.9647143701. The cubic root of 37994461 is about 336.1812048144.

The spelling of 37994461 in words is "thirty-seven million, nine hundred ninety-four thousand, four hundred sixty-one".