37318649 has 2 divisors, whose sum is σ = 37318650. Its totient is φ = 37318648.

The previous prime is 37318643. The next prime is 37318667. The reversal of 37318649 is 94681373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29506624 + 7812025 = 5432^2 + 2795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37318649 is a prime.

It is not a weakly prime, because it can be changed into another prime (37318643) 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, 18659324 + 18659325.

It is an arithmetic number, because the mean of its divisors is an integer number (18659325).

Almost surely, 2^37318649 is an apocalyptic number.

It is an amenable number.

37318649 is a deficient number, since it is larger than the sum of its proper divisors (1).

37318649 is an equidigital number, since it uses as much as digits as its factorization.

37318649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 37318649 is about 6108.8991643339. The cubic root of 37318649 is about 334.1760369786.

The spelling of 37318649 in words is "thirty-seven million, three hundred eighteen thousand, six hundred forty-nine".