19012442112 has 216 divisors, whose sum is σ = 58050638100. Its totient is φ = 5978161152.

The previous prime is 19012442107. The next prime is 19012442117. The reversal of 19012442112 is 21124421091.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19012442107) and next prime (19012442117).

It is a super-2 number, since 2×19012442112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19012442117) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 81598348 + ... + 81598580.

Almost surely, 2^19012442112 is an apocalyptic number.

19012442112 is a gapful number since it is divisible by the number (12) 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 19012442112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29025319050).

19012442112 is an abundant number, since it is smaller than the sum of its proper divisors (39038195988).

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

19012442112 is an equidigital number, since it uses as much as digits as its factorization.

19012442112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 19012442112 in words is "nineteen billion, twelve million, four hundred forty-two thousand, one hundred twelve".