18228271480 has 32 divisors (see below), whose sum is σ = 41274858240. Its totient is φ = 7244864640.

The previous prime is 18228271469. The next prime is 18228271487. The reversal of 18228271480 is 8417282281.

It is a super-2 number, since 2×18228271480² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18228271487) 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, 1445016 + ... + 1457575.

It is an arithmetic number, because the mean of its divisors is an integer number (1289839320).

Almost surely, 2^18228271480 is an apocalyptic number.

18228271480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18228271480 is an abundant number, since it is smaller than the sum of its proper divisors (23046586760).

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

18228271480 is a wasteful number, since it uses less digits than its factorization.

18228271480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902759 (or 2902755 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 43.

The spelling of 18228271480 in words is "eighteen billion, two hundred twenty-eight million, two hundred seventy-one thousand, four hundred eighty".