18007871942 has 16 divisors (see below), whose sum is σ = 28195776000. Its totient is φ = 8609545032.

The previous prime is 18007871839. The next prime is 18007871953. The reversal of 18007871942 is 24917870081.

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, 74309 + ... + 203807.

It is an arithmetic number, because the mean of its divisors is an integer number (1762236000).

Almost surely, 2^18007871942 is an apocalyptic number.

18007871942 is a deficient number, since it is larger than the sum of its proper divisors (10187904058).

18007871942 is a wasteful number, since it uses less digits than its factorization.

18007871942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132547.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 18007871942 in words is "eighteen billion, seven million, eight hundred seventy-one thousand, nine hundred forty-two".