38268218891 has 12 divisors (see below), whose sum is σ = 44583475680. Its totient is φ = 32751678960.

The previous prime is 38268218873. The next prime is 38268218903. The reversal of 38268218891 is 19881286283.

It is a happy number.

It is not a de Polignac number, because 38268218891 - 2⁶ = 38268218827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38268218851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558371 + ... + 623148.

It is an arithmetic number, because the mean of its divisors is an integer number (3715289640).

Almost surely, 2^38268218891 is an apocalyptic number.

38268218891 is a deficient number, since it is larger than the sum of its proper divisors (6315256789).

38268218891 is a wasteful number, since it uses less digits than its factorization.

38268218891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182194 (or 1182187 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 56.

The spelling of 38268218891 in words is "thirty-eight billion, two hundred sixty-eight million, two hundred eighteen thousand, eight hundred ninety-one".