19474052688 has 120 divisors (see below), whose sum is σ = 56496860160. Its totient is φ = 6255325440.

The previous prime is 19474052671. The next prime is 19474052693. The reversal of 19474052688 is 88625047491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1057770 + ... + 1076022.

It is an arithmetic number, because the mean of its divisors is an integer number (470807168).

Almost surely, 2^19474052688 is an apocalyptic number.

19474052688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19474052688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28248430080).

19474052688 is an abundant number, since it is smaller than the sum of its proper divisors (37022807472).

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

19474052688 is a wasteful number, since it uses less digits than its factorization.

19474052688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18537 (or 18528 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 19474052688 in words is "nineteen billion, four hundred seventy-four million, fifty-two thousand, six hundred eighty-eight".