19242244008 has 120 divisors (see below), whose sum is σ = 58361197950. Its totient is φ = 5920656768.

The previous prime is 19242244001. The next prime is 19242244031. The reversal of 19242244008 is 80044224291.

19242244008 is a `hidden beast` number, since 1 + 9 + 24 + 224 + 400 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7814206404 + 11428037604 = 88398^2 + 106902^2 .

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

It is not an unprimeable number, because it can be changed into a prime (19242244001) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 21658 + ... + 197366.

Almost surely, 2^19242244008 is an apocalyptic number.

19242244008 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 19242244008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29180598975).

19242244008 is an abundant number, since it is smaller than the sum of its proper divisors (39118953942).

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

19242244008 is a wasteful number, since it uses less digits than its factorization.

19242244008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175753 (or 175727 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

Adding to 19242244008 its reverse (80044224291), we get a palindrome (99286468299).

The spelling of 19242244008 in words is "nineteen billion, two hundred forty-two million, two hundred forty-four thousand, eight".