19197668 has 12 divisors (see below), whose sum is σ = 38395392. Its totient is φ = 8227560.

The previous prime is 19197611. The next prime is 19197671. The reversal of 19197668 is 86679191.

19197668 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342788 + ... + 342843.

It is an arithmetic number, because the mean of its divisors is an integer number (3199616).

Almost surely, 2^19197668 is an apocalyptic number.

It is an amenable number.

19197668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19197668 is a wasteful number, since it uses less digits than its factorization.

19197668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685642 (or 685640 counting only the distinct ones).

The product of its digits is 163296, while the sum is 47.

The square root of 19197668 is about 4381.5143500849. The cubic root of 19197668 is about 267.7623384992.

The spelling of 19197668 in words is "nineteen million, one hundred ninety-seven thousand, six hundred sixty-eight".