19042490628 has 144 divisors (see below), whose sum is σ = 56820306816. Its totient is φ = 5264663040.

The previous prime is 19042490587. The next prime is 19042490647. The reversal of 19042490628 is 82609424091.

19042490628 is a `hidden beast` number, since 19 + 0 + 4 + 2 + 4 + 9 + 0 + 628 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 965223 + ... + 984753.

It is an arithmetic number, because the mean of its divisors is an integer number (394585464).

Almost surely, 2^19042490628 is an apocalyptic number.

19042490628 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 19042490628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28410153408).

19042490628 is an abundant number, since it is smaller than the sum of its proper divisors (37777816188).

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

19042490628 is a wasteful number, since it uses less digits than its factorization.

19042490628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19674 (or 19669 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 19042490628 in words is "nineteen billion, forty-two million, four hundred ninety thousand, six hundred twenty-eight".