19138568 has 16 divisors (see below), whose sum is σ = 35969280. Its totient is φ = 9546768.

The previous prime is 19138531. The next prime is 19138571. The reversal of 19138568 is 86583191.

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, 1121 + ... + 6287.

It is an arithmetic number, because the mean of its divisors is an integer number (2248080).

Almost surely, 2^19138568 is an apocalyptic number.

It is an amenable number.

19138568 is a deficient number, since it is larger than the sum of its proper divisors (16830712).

19138568 is a wasteful number, since it uses less digits than its factorization.

19138568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636 (or 5632 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 19138568 is about 4374.7649079693. The cubic root of 19138568 is about 267.4872873686.

The spelling of 19138568 in words is "nineteen million, one hundred thirty-eight thousand, five hundred sixty-eight".