19306398080 has 64 divisors (see below), whose sum is σ = 46437764400. Its totient is φ = 7675140096.

The previous prime is 19306398071. The next prime is 19306398103. The reversal of 19306398080 is 8089360391.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11786 + ... + 196854.

Almost surely, 2^19306398080 is an apocalyptic number.

19306398080 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 19306398080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23218882200).

19306398080 is an abundant number, since it is smaller than the sum of its proper divisors (27131366320).

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

19306398080 is a wasteful number, since it uses less digits than its factorization.

19306398080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185251 (or 185239 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 19306398080 in words is "nineteen billion, three hundred six million, three hundred ninety-eight thousand, eighty".