19098993520 has 80 divisors (see below), whose sum is σ = 45544942080. Its totient is φ = 7444346112.

The previous prime is 19098993517. The next prime is 19098993521. The reversal of 19098993520 is 2539989091.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19098993521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1503837 + ... + 1516483.

It is an arithmetic number, because the mean of its divisors is an integer number (569311776).

Almost surely, 2^19098993520 is an apocalyptic number.

19098993520 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 19098993520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22772471040).

19098993520 is an abundant number, since it is smaller than the sum of its proper divisors (26445948560).

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

19098993520 is a wasteful number, since it uses less digits than its factorization.

19098993520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142 (or 13136 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 55.

The spelling of 19098993520 in words is "nineteen billion, ninety-eight million, nine hundred ninety-three thousand, five hundred twenty".