38890508218 has 8 divisors (see below), whose sum is σ = 61767277812. Its totient is φ = 18301415616.

The previous prime is 38890508179. The next prime is 38890508219. The reversal of 38890508218 is 81280509883.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36792226969 + 2098281249 = 191813^2 + 45807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (38890508219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571919205 + ... + 571919272.

Almost surely, 2^38890508218 is an apocalyptic number.

38890508218 is a deficient number, since it is larger than the sum of its proper divisors (22876769594).

38890508218 is a wasteful number, since it uses less digits than its factorization.

38890508218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143838496.

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 38890508218 in words is "thirty-eight billion, eight hundred ninety million, five hundred eight thousand, two hundred eighteen".