19326927840 has 96 divisors (see below), whose sum is σ = 66414370176. Its totient is φ = 4685314560.

The previous prime is 19326927839. The next prime is 19326927847. The reversal of 19326927840 is 4872962391.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19326927847) 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, 1824922 + ... + 1835481.

It is an arithmetic number, because the mean of its divisors is an integer number (691816356).

Almost surely, 2^19326927840 is an apocalyptic number.

19326927840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19326927840 is an abundant number, since it is smaller than the sum of its proper divisors (47087442336).

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

19326927840 is a wasteful number, since it uses less digits than its factorization.

19326927840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660432 (or 3660424 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 19326927840 in words is "nineteen billion, three hundred twenty-six million, nine hundred twenty-seven thousand, eight hundred forty".