19480649328 has 120 divisors (see below), whose sum is σ = 63578892000. Its totient is φ = 5565885696.

The previous prime is 19480649317. The next prime is 19480649329. The reversal of 19480649328 is 82394608491.

19480649328 is a `hidden beast` number, since 19 + 480 + 64 + 93 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19480649329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147813 + ... + 246596.

It is an arithmetic number, because the mean of its divisors is an integer number (529824100).

Almost surely, 2^19480649328 is an apocalyptic number.

19480649328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19480649328 is an abundant number, since it is smaller than the sum of its proper divisors (44098242672).

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

19480649328 is a wasteful number, since it uses less digits than its factorization.

19480649328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394444 (or 394421 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 19480649328 in words is "nineteen billion, four hundred eighty million, six hundred forty-nine thousand, three hundred twenty-eight".