19097353728 has 120 divisors (see below), whose sum is σ = 55551944448. Its totient is φ = 6315466752.

The previous prime is 19097353711. The next prime is 19097353729. The reversal of 19097353728 is 82735379091.

19097353728 is a `hidden beast` number, since 19 + 0 + 9 + 73 + 537 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19097353729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568900 + ... + 601532.

Almost surely, 2^19097353728 is an apocalyptic number.

19097353728 is a gapful number since it is divisible by the number (18) 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 19097353728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27775972224).

19097353728 is an abundant number, since it is smaller than the sum of its proper divisors (36454590720).

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

19097353728 is a wasteful number, since it uses less digits than its factorization.

19097353728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32784 (or 32765 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 19097353728 in words is "nineteen billion, ninety-seven million, three hundred fifty-three thousand, seven hundred twenty-eight".