19442428488 has 256 divisors, whose sum is σ = 65539584000. Its totient is φ = 5213279232.

The previous prime is 19442428487. The next prime is 19442428507. The reversal of 19442428488 is 88482424491.

19442428488 is a `hidden beast` number, since 1 + 9 + 442 + 42 + 84 + 88 = 666.

It is a super-2 number, since 2×19442428488² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (19442428483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11283195 + ... + 11284917.

It is an arithmetic number, because the mean of its divisors is an integer number (256014000).

Almost surely, 2^19442428488 is an apocalyptic number.

19442428488 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 19442428488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32769792000).

19442428488 is an abundant number, since it is smaller than the sum of its proper divisors (46097155512).

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

19442428488 is a wasteful number, since it uses less digits than its factorization.

19442428488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201 (or 2191 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 54.

The spelling of 19442428488 in words is "nineteen billion, four hundred forty-two million, four hundred twenty-eight thousand, four hundred eighty-eight".