19180994560 has 480 divisors, whose sum is σ = 59188211712. Its totient is φ = 5803868160.

The previous prime is 19180994507. The next prime is 19180994579. The reversal of 19180994560 is 6549908191.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 19180994498 and 19180994507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231096279 + ... + 231096361.

Almost surely, 2^19180994560 is an apocalyptic number.

19180994560 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 19180994560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29594105856).

19180994560 is an abundant number, since it is smaller than the sum of its proper divisors (40007217152).

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

19180994560 is an equidigital number, since it uses as much as digits as its factorization.

19180994560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 19180994560 in words is "nineteen billion, one hundred eighty million, nine hundred ninety-four thousand, five hundred sixty".