19398916 has 12 divisors (see below), whose sum is σ = 33991888. Its totient is φ = 9686952.

The previous prime is 19398893. The next prime is 19398923. The reversal of 19398916 is 61989391.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 955 + ... + 6301.

Almost surely, 2^19398916 is an apocalyptic number.

It is an amenable number.

19398916 is a deficient number, since it is larger than the sum of its proper divisors (14592972).

19398916 is a wasteful number, since it uses less digits than its factorization.

19398916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258 (or 6256 counting only the distinct ones).

The product of its digits is 104976, while the sum is 46.

The square root of 19398916 is about 4404.4200526289. The cubic root of 19398916 is about 268.6947334707.

The spelling of 19398916 in words is "nineteen million, three hundred ninety-eight thousand, nine hundred sixteen".