38981315 has 4 divisors (see below), whose sum is σ = 46777584. Its totient is φ = 31185048.

The previous prime is 38981311. The next prime is 38981317. The reversal of 38981315 is 51318983.

38981315 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 an emirpimes, since its reverse is a distinct semiprime: 51318983 = 83 ⋅618301.

It is a cyclic number.

It is not a de Polignac number, because 38981315 - 2² = 38981311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38981311) 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, 3898127 + ... + 3898136.

It is an arithmetic number, because the mean of its divisors is an integer number (11694396).

Almost surely, 2^38981315 is an apocalyptic number.

38981315 is a deficient number, since it is larger than the sum of its proper divisors (7796269).

38981315 is an equidigital number, since it uses as much as digits as its factorization.

38981315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7796268.

The product of its digits is 25920, while the sum is 38.

The square root of 38981315 is about 6243.5018218945. The cubic root of 38981315 is about 339.0669777135.

The spelling of 38981315 in words is "thirty-eight million, nine hundred eighty-one thousand, three hundred fifteen".