19112183240 has 64 divisors (see below), whose sum is σ = 44425152000. Its totient is φ = 7392337920.

The previous prime is 19112183227. The next prime is 19112183263. The reversal of 19112183240 is 4238121191.

It is a junction number, because it is equal to n+sod(n) for n = 19112183197 and 19112183206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1741691 + ... + 1752629.

It is an arithmetic number, because the mean of its divisors is an integer number (694143000).

Almost surely, 2^19112183240 is an apocalyptic number.

19112183240 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 19112183240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22212576000).

19112183240 is an abundant number, since it is smaller than the sum of its proper divisors (25312968760).

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

19112183240 is a wasteful number, since it uses less digits than its factorization.

19112183240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12390 (or 12386 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 19112183240 in words is "nineteen billion, one hundred twelve million, one hundred eighty-three thousand, two hundred forty".