18389228942 has 16 divisors (see below), whose sum is σ = 31548180480. Its totient is φ = 7875151128.

The previous prime is 18389228927. The next prime is 18389228953. The reversal of 18389228942 is 24982298381.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476342 + ... + 513497.

It is an arithmetic number, because the mean of its divisors is an integer number (1971761280).

Almost surely, 2^18389228942 is an apocalyptic number.

18389228942 is a deficient number, since it is larger than the sum of its proper divisors (13158951538).

18389228942 is a wasteful number, since it uses less digits than its factorization.

18389228942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991175.

The product of its digits is 3981312, while the sum is 56.

The spelling of 18389228942 in words is "eighteen billion, three hundred eighty-nine million, two hundred twenty-eight thousand, nine hundred forty-two".