19868908 has 12 divisors (see below), whose sum is σ = 36600760. Its totient is φ = 9411552.

The previous prime is 19868897. The next prime is 19868939. The reversal of 19868908 is 80986891.

It is a happy number.

It is a super-2 number, since 2×19868908² = 789547010224928, which contains 22 as substring.

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, 130641 + ... + 130792.

Almost surely, 2^19868908 is an apocalyptic number.

It is an amenable number.

19868908 is a deficient number, since it is larger than the sum of its proper divisors (16731852).

19868908 is a wasteful number, since it uses less digits than its factorization.

19868908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261456 (or 261454 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 19868908 is about 4457.4553278749. The cubic root of 19868908 is about 270.8473970974.

The spelling of 19868908 in words is "nineteen million, eight hundred sixty-eight thousand, nine hundred eight".