19266974016 has 112 divisors (see below), whose sum is σ = 53972155200. Its totient is φ = 6048940032.

The previous prime is 19266973969. The next prime is 19266974017. The reversal of 19266974016 is 61047966291.

It is a self number, because there is not a number n which added to its sum of digits gives 19266974016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19266974017) 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, 615840 + ... + 646368.

Almost surely, 2^19266974016 is an apocalyptic number.

19266974016 is a gapful number since it is divisible by the number (16) 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 19266974016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26986077600).

19266974016 is an abundant number, since it is smaller than the sum of its proper divisors (34705181184).

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

19266974016 is a wasteful number, since it uses less digits than its factorization.

19266974016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30736 (or 30726 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 19266974016 in words is "nineteen billion, two hundred sixty-six million, nine hundred seventy-four thousand, sixteen".