18980708 has 6 divisors (see below), whose sum is σ = 33216246. Its totient is φ = 9490352.

The previous prime is 18980693. The next prime is 18980729. The reversal of 18980708 is 80708981.

It can be written as a sum of positive squares in only one way, i.e., 18939904 + 40804 = 4352^2 + 202^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2372585 + ... + 2372592.

It is an arithmetic number, because the mean of its divisors is an integer number (5536041).

Almost surely, 2^18980708 is an apocalyptic number.

It is an amenable number.

18980708 is a deficient number, since it is larger than the sum of its proper divisors (14235538).

18980708 is a wasteful number, since it uses less digits than its factorization.

18980708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745181 (or 4745179 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 18980708 is about 4356.6854373480. The cubic root of 18980708 is about 266.7498205954.

The spelling of 18980708 in words is "eighteen million, nine hundred eighty thousand, seven hundred eight".