38086913 has 4 divisors (see below), whose sum is σ = 38805588. Its totient is φ = 37368240.

The previous prime is 38086907. The next prime is 38086921. The reversal of 38086913 is 31968083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31968083 = 7 ⋅4566869.

It can be written as a sum of positive squares in 2 ways, for example, as 24039409 + 14047504 = 4903^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 38086913 - 2⁴ = 38086897 is a prime.

It is a super-2 number, since 2×38086913² = 2901225883739138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38086513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359258 + ... + 359363.

It is an arithmetic number, because the mean of its divisors is an integer number (9701397).

Almost surely, 2^38086913 is an apocalyptic number.

It is an amenable number.

38086913 is a deficient number, since it is larger than the sum of its proper divisors (718675).

38086913 is an equidigital number, since it uses as much as digits as its factorization.

38086913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718674.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 38086913 is about 6171.4595518402. The cubic root of 38086913 is about 336.4536607500.

The spelling of 38086913 in words is "thirty-eight million, eighty-six thousand, nine hundred thirteen".