19419868 has 12 divisors (see below), whose sum is σ = 36599080. Its totient is φ = 8962992.

The previous prime is 19419863. The next prime is 19419871. The reversal of 19419868 is 86891491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19419863) by changing a digit.

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, 186678 + ... + 186781.

Almost surely, 2^19419868 is an apocalyptic number.

It is an amenable number.

19419868 is a deficient number, since it is larger than the sum of its proper divisors (17179212).

19419868 is a wasteful number, since it uses less digits than its factorization.

19419868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373476 (or 373474 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 19419868 is about 4406.7979304706. The cubic root of 19419868 is about 268.7914341741.

The spelling of 19419868 in words is "nineteen million, four hundred nineteen thousand, eight hundred sixty-eight".