19994895360 has 616 divisors, whose sum is σ = 78612267456. Its totient is φ = 4837294080.

The previous prime is 19994895353. The next prime is 19994895377. The reversal of 19994895360 is 6359849991.

19994895360 is a `hidden beast` number, since 1 + 9 + 9 + 94 + 8 + 9 + 536 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 41057037 + ... + 41057523.

Almost surely, 2^19994895360 is an apocalyptic number.

19994895360 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 19994895360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39306133728).

19994895360 is an abundant number, since it is smaller than the sum of its proper divisors (58617372096).

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

19994895360 is an equidigital number, since it uses as much as digits as its factorization.

19994895360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 63.

The spelling of 19994895360 in words is "nineteen billion, nine hundred ninety-four million, eight hundred ninety-five thousand, three hundred sixty".