38219744218438 has 4 divisors (see below), whose sum is σ = 57329616327660. Its totient is φ = 19109872109218.

The previous prime is 38219744218421. The next prime is 38219744218489. The reversal of 38219744218438 is 83481244791283.

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

It is a self number, because there is not a number n which added to its sum of digits gives 38219744218438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9554936054608 + ... + 9554936054611.

It is an arithmetic number, because the mean of its divisors is an integer number (14332404081915).

Almost surely, 2^{38219744218438} is an apocalyptic number.

38219744218438 is a deficient number, since it is larger than the sum of its proper divisors (19109872109222).

38219744218438 is a wasteful number, since it uses less digits than its factorization.

38219744218438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19109872109221.

The product of its digits is 74317824, while the sum is 64.

The spelling of 38219744218438 in words is "thirty-eight trillion, two hundred nineteen billion, seven hundred forty-four million, two hundred eighteen thousand, four hundred thirty-eight".