19144868 has 24 divisors (see below), whose sum is σ = 34673184. Its totient is φ = 9243200.

The previous prime is 19144859. The next prime is 19144871. The reversal of 19144868 is 86844191.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17003 + ... + 18093.

It is an arithmetic number, because the mean of its divisors is an integer number (1444716).

Almost surely, 2^19144868 is an apocalyptic number.

It is an amenable number.

19144868 is a deficient number, since it is larger than the sum of its proper divisors (15528316).

19144868 is a wasteful number, since it uses less digits than its factorization.

19144868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1241 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 19144868 is about 4375.4848874153. The cubic root of 19144868 is about 267.5166344796.

The spelling of 19144868 in words is "nineteen million, one hundred forty-four thousand, eight hundred sixty-eight".