19084257240 has 128 divisors (see below), whose sum is σ = 57939779520. Its totient is φ = 5028249600.

The previous prime is 19084257221. The next prime is 19084257251. The reversal of 19084257240 is 4275248091.

It is a junction number, because it is equal to n+sod(n) for n = 19084257192 and 19084257201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10253910 + ... + 10255770.

Almost surely, 2^19084257240 is an apocalyptic number.

19084257240 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 19084257240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28969889760).

19084257240 is an abundant number, since it is smaller than the sum of its proper divisors (38855522280).

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

19084257240 is a wasteful number, since it uses less digits than its factorization.

19084257240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853 (or 2849 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 19084257240 in words is "nineteen billion, eighty-four million, two hundred fifty-seven thousand, two hundred forty".