38130813 has 24 divisors (see below), whose sum is σ = 66650688. Its totient is φ = 20506752.

The previous prime is 38130793. The next prime is 38130821. The reversal of 38130813 is 31803183.

It is not a de Polignac number, because 38130813 - 2⁶ = 38130749 is a prime.

It is a super-3 number, since 3×38130813³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38130613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16731 + ... + 18872.

It is an arithmetic number, because the mean of its divisors is an integer number (2777112).

Almost surely, 2^38130813 is an apocalyptic number.

It is an amenable number.

38130813 is a deficient number, since it is larger than the sum of its proper divisors (28519875).

38130813 is a wasteful number, since it uses less digits than its factorization.

38130813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35633 (or 35630 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 38130813 is about 6175.0152226533. The cubic root of 38130813 is about 336.5828796276.

Adding to 38130813 its reverse (31803183), we get a palindrome (69933996).

The spelling of 38130813 in words is "thirty-eight million, one hundred thirty thousand, eight hundred thirteen".