18180403080 has 128 divisors (see below), whose sum is σ = 65613542400. Its totient is φ = 3936805632.

The previous prime is 18180403067. The next prime is 18180403117. The reversal of 18180403080 is 8030408181.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553602 + ... + 585521.

It is an arithmetic number, because the mean of its divisors is an integer number (512605800).

Almost surely, 2^18180403080 is an apocalyptic number.

18180403080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18180403080 is an abundant number, since it is smaller than the sum of its proper divisors (47433139320).

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

18180403080 is a wasteful number, since it uses less digits than its factorization.

18180403080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139163 (or 1139159 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The spelling of 18180403080 in words is "eighteen billion, one hundred eighty million, four hundred three thousand, eighty".