19249242144 has 96 divisors (see below), whose sum is σ = 56163046464. Its totient is φ = 5723028480.

The previous prime is 19249242139. The next prime is 19249242163. The reversal of 19249242144 is 44124294291.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 19249242096 and 19249242105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115999 + ... + 227934.

It is an arithmetic number, because the mean of its divisors is an integer number (585031734).

Almost surely, 2^19249242144 is an apocalyptic number.

It is an amenable number.

19249242144 is an abundant number, since it is smaller than the sum of its proper divisors (36913804320).

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

19249242144 is a wasteful number, since it uses less digits than its factorization.

19249242144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344010 (or 344002 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The spelling of 19249242144 in words is "nineteen billion, two hundred forty-nine million, two hundred forty-two thousand, one hundred forty-four".