19316868 has 12 divisors (see below), whose sum is σ = 45072720. Its totient is φ = 6438952.

The previous prime is 19316861. The next prime is 19316881. The reversal of 19316868 is 86861391.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19316861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804858 + ... + 804881.

It is an arithmetic number, because the mean of its divisors is an integer number (3756060).

Almost surely, 2^19316868 is an apocalyptic number.

It is an amenable number.

19316868 is an abundant number, since it is smaller than the sum of its proper divisors (25755852).

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

19316868 is a wasteful number, since it uses less digits than its factorization.

19316868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609746 (or 1609744 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 19316868 is about 4395.0959033905. The cubic root of 19316868 is about 268.3153820362.

The spelling of 19316868 in words is "nineteen million, three hundred sixteen thousand, eight hundred sixty-eight".