18472111420 has 24 divisors (see below), whose sum is σ = 44333067744. Its totient is φ = 6333295296.

The previous prime is 18472111403. The next prime is 18472111421. The reversal of 18472111420 is 2411127481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472111421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65971687 + ... + 65971966.

It is an arithmetic number, because the mean of its divisors is an integer number (1847211156).

Almost surely, 2^18472111420 is an apocalyptic number.

18472111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18472111420 is an abundant number, since it is smaller than the sum of its proper divisors (25860956324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18472111420 is a wasteful number, since it uses less digits than its factorization.

18472111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131943669 (or 131943667 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The spelling of 18472111420 in words is "eighteen billion, four hundred seventy-two million, one hundred eleven thousand, four hundred twenty".