18699908 has 12 divisors (see below), whose sum is σ = 32755212. Its totient is φ = 9341280.

The previous prime is 18699887. The next prime is 18699953. The reversal of 18699908 is 80999681.

It can be written as a sum of positive squares in 2 ways, for example, as 5098564 + 13601344 = 2258^2 + 3688^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6818 + ... + 9158.

It is an arithmetic number, because the mean of its divisors is an integer number (2729601).

Almost surely, 2^18699908 is an apocalyptic number.

It is an amenable number.

18699908 is a deficient number, since it is larger than the sum of its proper divisors (14055304).

18699908 is a wasteful number, since it uses less digits than its factorization.

18699908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342 (or 4340 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 18699908 is about 4324.3390246372. The cubic root of 18699908 is about 265.4278504434.

The spelling of 18699908 in words is "eighteen million, six hundred ninety-nine thousand, nine hundred eight".