19402143592 has 16 divisors (see below), whose sum is σ = 39177405540. Its totient is φ = 8954835456.

The previous prime is 19402143581. The next prime is 19402143599. The reversal of 19402143592 is 29534120491.

It can be written as a sum of positive squares in 2 ways, for example, as 18772836196 + 629307396 = 137014^2 + 25086^2 .

It is not an unprimeable number, because it can be changed into a prime (19402143599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93279433 + ... + 93279640.

Almost surely, 2^19402143592 is an apocalyptic number.

It is an amenable number.

19402143592 is an abundant number, since it is smaller than the sum of its proper divisors (19775261948).

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

19402143592 is a wasteful number, since it uses less digits than its factorization.

19402143592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186559092 (or 186559088 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 19402143592 in words is "nineteen billion, four hundred two million, one hundred forty-three thousand, five hundred ninety-two".