19402020392 has 32 divisors (see below), whose sum is σ = 39958401600. Its totient is φ = 8790845184.

The previous prime is 19402020371. The next prime is 19402020397. The reversal of 19402020392 is 29302020491.

It is not an unprimeable number, because it can be changed into a prime (19402020397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771393 + ... + 2778384.

It is an arithmetic number, because the mean of its divisors is an integer number (1248700050).

Almost surely, 2^19402020392 is an apocalyptic number.

It is an amenable number.

19402020392 is an abundant number, since it is smaller than the sum of its proper divisors (20556381208).

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

19402020392 is a wasteful number, since it uses less digits than its factorization.

19402020392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5549825 (or 5549821 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

Subtracting 19402020392 from its reverse (29302020491), we obtain a palindrome (9900000099).

It can be divided in two parts, 194020 and 20392, that added together give a palindrome (214412).

The spelling of 19402020392 in words is "nineteen billion, four hundred two million, twenty thousand, three hundred ninety-two".