18880808 has 8 divisors (see below), whose sum is σ = 35401530. Its totient is φ = 9440400.

The previous prime is 18880789. The next prime is 18880819. The reversal of 18880808 is 80808881.

It can be written as a sum of positive squares in only one way, i.e., 15984004 + 2896804 = 3998^2 + 1702^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×18880808³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1180043 + ... + 1180058.

Almost surely, 2^18880808 is an apocalyptic number.

It is an amenable number.

18880808 is a deficient number, since it is larger than the sum of its proper divisors (16520722).

18880808 is a wasteful number, since it uses less digits than its factorization.

18880808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360107 (or 2360103 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 41.

The square root of 18880808 is about 4345.2051735217. The cubic root of 18880808 is about 266.2810077988.

The spelling of 18880808 in words is "eighteen million, eight hundred eighty thousand, eight hundred eight".