19144768 has 14 divisors (see below), whose sum is σ = 37990526. Its totient is φ = 9572352.

The previous prime is 19144759. The next prime is 19144777. The reversal of 19144768 is 86744191.

It is an interprime number because it is at equal distance from previous prime (19144759) and next prime (19144777).

It can be written as a sum of positive squares in only one way, i.e., 14684224 + 4460544 = 3832^2 + 2112^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19144768.

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 as a sum of consecutive naturals, namely, 149505 + ... + 149632.

It is an arithmetic number, because the mean of its divisors is an integer number (2713609).

Almost surely, 2^19144768 is an apocalyptic number.

It is an amenable number.

19144768 is a deficient number, since it is larger than the sum of its proper divisors (18845758).

19144768 is an equidigital number, since it uses as much as digits as its factorization.

19144768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299149 (or 299139 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 19144768 is about 4375.4734600955. The cubic root of 19144768 is about 267.5161687027.

The spelling of 19144768 in words is "nineteen million, one hundred forty-four thousand, seven hundred sixty-eight".