19471489580 has 96 divisors (see below), whose sum is σ = 44888437440. Its totient is φ = 7065067520.

The previous prime is 19471489547. The next prime is 19471489591. The reversal of 19471489580 is 8598417491.

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, 1148606 + ... + 1165434.

It is an arithmetic number, because the mean of its divisors is an integer number (467587890).

Almost surely, 2^19471489580 is an apocalyptic number.

19471489580 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 19471489580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22444218720).

19471489580 is an abundant number, since it is smaller than the sum of its proper divisors (25416947860).

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

19471489580 is a wasteful number, since it uses less digits than its factorization.

19471489580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16979 (or 16977 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 56.

The spelling of 19471489580 in words is "nineteen billion, four hundred seventy-one million, four hundred eighty-nine thousand, five hundred eighty".