18130017280 has 44 divisors (see below), whose sum is σ = 43490807640. Its totient is φ = 7252004864.

The previous prime is 18130017247. The next prime is 18130017293. The reversal of 18130017280 is 8271003181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1765390 + ... + 1775629.

Almost surely, 2^18130017280 is an apocalyptic number.

18130017280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18130017280 is an abundant number, since it is smaller than the sum of its proper divisors (25360790360).

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

18130017280 is an equidigital number, since it uses as much as digits as its factorization.

18130017280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541044 (or 3541026 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

It can be divided in two parts, 1813001 and 7280, that added together give a palindrome (1820281).

The spelling of 18130017280 in words is "eighteen billion, one hundred thirty million, seventeen thousand, two hundred eighty".