19045787442 has 32 divisors (see below), whose sum is σ = 41897888064. Its totient is φ = 5771448320.

The previous prime is 19045787419. The next prime is 19045787447. The reversal of 19045787442 is 24478754091.

It is not an unprimeable number, because it can be changed into a prime (19045787447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1184463 + ... + 1200434.

It is an arithmetic number, because the mean of its divisors is an integer number (1309309002).

Almost surely, 2^19045787442 is an apocalyptic number.

19045787442 is an abundant number, since it is smaller than the sum of its proper divisors (22852100622).

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

19045787442 is a wasteful number, since it uses less digits than its factorization.

19045787442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384935 (or 2384913 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 19045787442 in words is "nineteen billion, forty-five million, seven hundred eighty-seven thousand, four hundred forty-two".