19489206480 has 160 divisors (see below), whose sum is σ = 63816867840. Its totient is φ = 4912427520.

The previous prime is 19489206421. The next prime is 19489206533. The reversal of 19489206480 is 8460298491.

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, 289461 + ... + 350379.

It is an arithmetic number, because the mean of its divisors is an integer number (398855424).

Almost surely, 2^19489206480 is an apocalyptic number.

19489206480 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 19489206480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31908433920).

19489206480 is an abundant number, since it is smaller than the sum of its proper divisors (44327661360).

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

19489206480 is a wasteful number, since it uses less digits than its factorization.

19489206480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61009 (or 61003 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 19489206480 in words is "nineteen billion, four hundred eighty-nine million, two hundred six thousand, four hundred eighty".