19499032980 has 288 divisors, whose sum is σ = 72129657600. Its totient is φ = 4162129920.

The previous prime is 19499032979. The next prime is 19499032991. The reversal of 19499032980 is 8923099491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2802546 + ... + 2809494.

It is an arithmetic number, because the mean of its divisors is an integer number (250450200).

Almost surely, 2^19499032980 is an apocalyptic number.

19499032980 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 19499032980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36064828800).

19499032980 is an abundant number, since it is smaller than the sum of its proper divisors (52630624620).

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

19499032980 is a wasteful number, since it uses less digits than its factorization.

19499032980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119 (or 7114 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 19499032980 in words is "nineteen billion, four hundred ninety-nine million, thirty-two thousand, nine hundred eighty".