18980580 has 24 divisors (see below), whose sum is σ = 53145792. Its totient is φ = 5061472.

The previous prime is 18980579. The next prime is 18980597. The reversal of 18980580 is 8508981.

It is a super-3 number, since 3×18980580³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158112 + ... + 158231.

It is an arithmetic number, because the mean of its divisors is an integer number (2214408).

Almost surely, 2^18980580 is an apocalyptic number.

18980580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18980580 is an abundant number, since it is smaller than the sum of its proper divisors (34165212).

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

18980580 is a wasteful number, since it uses less digits than its factorization.

18980580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316355 (or 316353 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 18980580 is about 4356.6707472564. The cubic root of 18980580 is about 266.7492209681.

The spelling of 18980580 in words is "eighteen million, nine hundred eighty thousand, five hundred eighty".