19364058920 has 64 divisors (see below), whose sum is σ = 44732898000. Its totient is φ = 7539589120.

The previous prime is 19364058919. The next prime is 19364058949. The reversal of 19364058920 is 2985046391.

It can be written as a sum of positive squares in 8 ways, for example, as 4056925636 + 15307133284 = 63694^2 + 123722^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723212 + ... + 749508.

Almost surely, 2^19364058920 is an apocalyptic number.

19364058920 is a gapful number since it is divisible by the number (10) 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 19364058920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22366449000).

19364058920 is an abundant number, since it is smaller than the sum of its proper divisors (25368839080).

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

19364058920 is a wasteful number, since it uses less digits than its factorization.

19364058920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26798 (or 26794 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 19364058920 in words is "nineteen billion, three hundred sixty-four million, fifty-eight thousand, nine hundred twenty".