19442680800 has 72 divisors (see below), whose sum is σ = 63285933816. Its totient is φ = 5184714240.

The previous prime is 19442680787. The next prime is 19442680813. The reversal of 19442680800 is 808624491.

It is an interprime number because it is at equal distance from previous prime (19442680787) and next prime (19442680813).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4048159 + ... + 4052958.

It is an arithmetic number, because the mean of its divisors is an integer number (878971303).

Almost surely, 2^19442680800 is an apocalyptic number.

19442680800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19442680800 is an abundant number, since it is smaller than the sum of its proper divisors (43843253016).

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

19442680800 is a wasteful number, since it uses less digits than its factorization.

19442680800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8101140 (or 8101127 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 19442680800 in words is "nineteen billion, four hundred forty-two million, six hundred eighty thousand, eight hundred".