38215397879 has 4 divisors (see below), whose sum is σ = 38936443176. Its totient is φ = 37494352584.

The previous prime is 38215397863. The next prime is 38215397881. The reversal of 38215397879 is 97879351283.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38215397879 - 2⁴ = 38215397863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38215397849) 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, 360522569 + ... + 360522674.

It is an arithmetic number, because the mean of its divisors is an integer number (9734110794).

Almost surely, 2^38215397879 is an apocalyptic number.

38215397879 is a deficient number, since it is larger than the sum of its proper divisors (721045297).

38215397879 is an equidigital number, since it uses as much as digits as its factorization.

38215397879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721045296.

The product of its digits is 22861440, while the sum is 62.

The spelling of 38215397879 in words is "thirty-eight billion, two hundred fifteen million, three hundred ninety-seven thousand, eight hundred seventy-nine".