19324132840 has 64 divisors (see below), whose sum is σ = 44334455760. Its totient is φ = 7577856000.

The previous prime is 19324132823. The next prime is 19324132853. The reversal of 19324132840 is 4823142391.

It can be written as a sum of positive squares in 8 ways, for example, as 14724851716 + 4599281124 = 121346^2 + 67818^2 .

It is a super-2 number, since 2×19324132840² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19324132840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3510090 + ... + 3515590.

Almost surely, 2^19324132840 is an apocalyptic number.

19324132840 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 19324132840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22167227880).

19324132840 is an abundant number, since it is smaller than the sum of its proper divisors (25010322920).

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

19324132840 is a wasteful number, since it uses less digits than its factorization.

19324132840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222 (or 7218 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 19324132840 in words is "nineteen billion, three hundred twenty-four million, one hundred thirty-two thousand, eight hundred forty".