37672981 has 2 divisors, whose sum is σ = 37672982. Its totient is φ = 37672980.

The previous prime is 37672963. The next prime is 37672997. The reversal of 37672981 is 18927673.

It is a happy number.

37672981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37271025 + 401956 = 6105^2 + 634^2 .

It is a cyclic number.

It is not a de Polignac number, because 37672981 - 2⁵ = 37672949 is a prime.

It is a super-2 number, since 2×37672981² = 2838506994852722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37672931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18836490 + 18836491.

It is an arithmetic number, because the mean of its divisors is an integer number (18836491).

Almost surely, 2^37672981 is an apocalyptic number.

It is an amenable number.

37672981 is a deficient number, since it is larger than the sum of its proper divisors (1).

37672981 is an equidigital number, since it uses as much as digits as its factorization.

37672981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 37672981 is about 6137.8319462168. The cubic root of 37672981 is about 335.2303487397.

The spelling of 37672981 in words is "thirty-seven million, six hundred seventy-two thousand, nine hundred eighty-one".