37930813 has 4 divisors (see below), whose sum is σ = 38021760. Its totient is φ = 37839868.

The previous prime is 37930807. The next prime is 37930817. The reversal of 37930813 is 31803973.

37930813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31803973 = 839 ⋅37907.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37930813 is a prime.

It is a super-3 number, since 3×37930813³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37930817) 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 in 3 ways as a sum of consecutive naturals, for example, 44845 + ... + 45682.

It is an arithmetic number, because the mean of its divisors is an integer number (9505440).

Almost surely, 2^37930813 is an apocalyptic number.

It is an amenable number.

37930813 is a deficient number, since it is larger than the sum of its proper divisors (90947).

37930813 is an equidigital number, since it uses as much as digits as its factorization.

37930813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90946.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 37930813 is about 6158.7996395402. The cubic root of 37930813 is about 335.9933772551.

The spelling of 37930813 in words is "thirty-seven million, nine hundred thirty thousand, eight hundred thirteen".