18471393142 has 16 divisors (see below), whose sum is σ = 28082545920. Its totient is φ = 9111227112.

The previous prime is 18471393133. The next prime is 18471393151. The reversal of 18471393142 is 24139317481.

It is an interprime number because it is at equal distance from previous prime (18471393133) and next prime (18471393151).

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, 116292 + ... + 224647.

It is an arithmetic number, because the mean of its divisors is an integer number (1755159120).

Almost surely, 2^18471393142 is an apocalyptic number.

18471393142 is a deficient number, since it is larger than the sum of its proper divisors (9611152778).

18471393142 is a wasteful number, since it uses less digits than its factorization.

18471393142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341307.

The product of its digits is 145152, while the sum is 43.

The spelling of 18471393142 in words is "eighteen billion, four hundred seventy-one million, three hundred ninety-three thousand, one hundred forty-two".