19289072814 has 64 divisors (see below), whose sum is σ = 44608734720. Its totient is φ = 5495429120.

The previous prime is 19289072813. The next prime is 19289072857. The reversal of 19289072814 is 41827098291.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19289072813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1094182 + ... + 1111670.

It is an arithmetic number, because the mean of its divisors is an integer number (697011480).

Almost surely, 2^19289072814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19289072814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22304367360).

19289072814 is an abundant number, since it is smaller than the sum of its proper divisors (25319661906).

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

19289072814 is a wasteful number, since it uses less digits than its factorization.

19289072814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18505.

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 19289072814 in words is "nineteen billion, two hundred eighty-nine million, seventy-two thousand, eight hundred fourteen".