19893396280 has 32 divisors (see below), whose sum is σ = 45390572640. Its totient is φ = 7845281920.

The previous prime is 19893396253. The next prime is 19893396317. The reversal of 19893396280 is 8269339891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3499519 + ... + 3505198.

It is an arithmetic number, because the mean of its divisors is an integer number (1418455395).

Almost surely, 2^19893396280 is an apocalyptic number.

19893396280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19893396280 is an abundant number, since it is smaller than the sum of its proper divisors (25497176360).

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

19893396280 is a wasteful number, since it uses less digits than its factorization.

19893396280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004799 (or 7004795 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 19893396280 in words is "nineteen billion, eight hundred ninety-three million, three hundred ninety-six thousand, two hundred eighty".