180013540 has 24 divisors (see below), whose sum is σ = 432032832. Its totient is φ = 61718880.

The previous prime is 180013517. The next prime is 180013541. The reversal of 180013540 is 45310081.

It is not an unprimeable number, because it can be changed into a prime (180013541) 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, 642766 + ... + 643045.

It is an arithmetic number, because the mean of its divisors is an integer number (18001368).

Almost surely, 2^180013540 is an apocalyptic number.

180013540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180013540 is an abundant number, since it is smaller than the sum of its proper divisors (252019292).

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

180013540 is a wasteful number, since it uses less digits than its factorization.

180013540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285827 (or 1285825 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 180013540 is about 13416.9124615166. The cubic root of 180013540 is about 564.6357743379.

The spelling of 180013540 in words is "one hundred eighty million, thirteen thousand, five hundred forty".