37382381 has 2 divisors, whose sum is σ = 37382382. Its totient is φ = 37382380.

The previous prime is 37382377. The next prime is 37382407. The reversal of 37382381 is 18328373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37319881 + 62500 = 6109^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 37382381 - 2² = 37382377 is a prime.

It is a super-2 number, since 2×37382381² = 2794884818458322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37388381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18691190 + 18691191.

It is an arithmetic number, because the mean of its divisors is an integer number (18691191).

Almost surely, 2^37382381 is an apocalyptic number.

It is an amenable number.

37382381 is a deficient number, since it is larger than the sum of its proper divisors (1).

37382381 is an equidigital number, since it uses as much as digits as its factorization.

37382381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 37382381 is about 6114.1132635894. The cubic root of 37382381 is about 334.3661617136.

The spelling of 37382381 in words is "thirty-seven million, three hundred eighty-two thousand, three hundred eighty-one".