19197988480 has 256 divisors, whose sum is σ = 54156418560. Its totient is φ = 6428753920.

The previous prime is 19197988477. The next prime is 19197988501. The reversal of 19197988480 is 8488979191.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 5623254 + ... + 5626666.

It is an arithmetic number, because the mean of its divisors is an integer number (211548510).

Almost surely, 2^19197988480 is an apocalyptic number.

19197988480 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 19197988480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27078209280).

19197988480 is an abundant number, since it is smaller than the sum of its proper divisors (34958430080).

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

19197988480 is a wasteful number, since it uses less digits than its factorization.

19197988480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507 (or 3495 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 64.

The spelling of 19197988480 in words is "nineteen billion, one hundred ninety-seven million, nine hundred eighty-eight thousand, four hundred eighty".