37363681 has 2 divisors, whose sum is σ = 37363682. Its totient is φ = 37363680.

The previous prime is 37363657. The next prime is 37363717. The reversal of 37363681 is 18636373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33814225 + 3549456 = 5815^2 + 1884^2 .

It is a cyclic number.

It is not a de Polignac number, because 37363681 - 2⁷ = 37363553 is a prime.

It is a super-2 number, since 2×37363681² = 2792089315739522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 37363681.

It is not a weakly prime, because it can be changed into another prime (37363631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18681840 + 18681841.

It is an arithmetic number, because the mean of its divisors is an integer number (18681841).

Almost surely, 2^37363681 is an apocalyptic number.

It is an amenable number.

37363681 is a deficient number, since it is larger than the sum of its proper divisors (1).

37363681 is an equidigital number, since it uses as much as digits as its factorization.

37363681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 37363681 is about 6112.5838235561. The cubic root of 37363681 is about 334.3103984552.

The spelling of 37363681 in words is "thirty-seven million, three hundred sixty-three thousand, six hundred eighty-one".