19020718080 has 1176 divisors, whose sum is σ = 85736891772. Its totient is φ = 4013162496.

The previous prime is 19020718021. The next prime is 19020718091. The reversal of 19020718080 is 8081702091.

It can be written as a sum of positive squares in 2 ways, for example, as 17703899136 + 1316818944 = 133056^2 + 36288^2 .

It is a tau number, because it is divible by the number of its divisors (1176).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1463132154 + ... + 1463132166.

Almost surely, 2^19020718080 is an apocalyptic number.

19020718080 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 19020718080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42868445886).

19020718080 is an abundant number, since it is smaller than the sum of its proper divisors (66716173692).

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

19020718080 is an frugal number, since it uses more digits than its factorization.

19020718080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The spelling of 19020718080 in words is "nineteen billion, twenty million, seven hundred eighteen thousand, eighty".