18054047280 has 40 divisors (see below), whose sum is σ = 55967547312. Its totient is φ = 4814412544.

The previous prime is 18054047273. The next prime is 18054047287. The reversal of 18054047280 is 8274045081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18054047273) and next prime (18054047287).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (18054047287) 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, 37612359 + ... + 37612838.

Almost surely, 2^18054047280 is an apocalyptic number.

18054047280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18054047280 is an abundant number, since it is smaller than the sum of its proper divisors (37913500032).

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

18054047280 is a wasteful number, since it uses less digits than its factorization.

18054047280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75225213 (or 75225207 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 18054047280 in words is "eighteen billion, fifty-four million, forty-seven thousand, two hundred eighty".