18247457472 has 56 divisors (see below), whose sum is σ = 49306983936. Its totient is φ = 5953068288.

The previous prime is 18247457471. The next prime is 18247457479. The reversal of 18247457472 is 27475474281.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18247457471) 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, 1002028 + ... + 1020075.

It is an arithmetic number, because the mean of its divisors is an integer number (880481856).

Almost surely, 2^18247457472 is an apocalyptic number.

18247457472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18247457472 is an abundant number, since it is smaller than the sum of its proper divisors (31059526464).

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

18247457472 is a wasteful number, since it uses less digits than its factorization.

18247457472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022165 (or 2022155 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 51.

The spelling of 18247457472 in words is "eighteen billion, two hundred forty-seven million, four hundred fifty-seven thousand, four hundred seventy-two".