180415880 has 16 divisors (see below), whose sum is σ = 405935820. Its totient is φ = 72166336.

The previous prime is 180415847. The next prime is 180415891. The reversal of 180415880 is 88514081.

It can be written as a sum of positive squares in 2 ways, for example, as 180257476 + 158404 = 13426^2 + 398^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 180415880.

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, 2255159 + ... + 2255238.

Almost surely, 2^180415880 is an apocalyptic number.

180415880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180415880 is an abundant number, since it is smaller than the sum of its proper divisors (225519940).

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

180415880 is a wasteful number, since it uses less digits than its factorization.

180415880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510408 (or 4510404 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 180415880 is about 13431.8978554782. The cubic root of 180415880 is about 565.0561251578.

The spelling of 180415880 in words is "one hundred eighty million, four hundred fifteen thousand, eight hundred eighty".