19139162112 has 624 divisors, whose sum is σ = 68121860352. Its totient is φ = 5255331840.

The previous prime is 19139162111. The next prime is 19139162131. The reversal of 19139162112 is 21126193191.

19139162112 is a `hidden beast` number, since 1 + 9 + 13 + 9 + 1 + 621 + 12 = 666.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19139162111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285659103 + ... + 285659169.

It is an arithmetic number, because the mean of its divisors is an integer number (109169648).

Almost surely, 2^19139162112 is an apocalyptic number.

19139162112 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 19139162112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34060930176).

19139162112 is an abundant number, since it is smaller than the sum of its proper divisors (48982698240).

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

19139162112 is an frugal number, since it uses more digits than its factorization.

19139162112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 120 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The spelling of 19139162112 in words is "nineteen billion, one hundred thirty-nine million, one hundred sixty-two thousand, one hundred twelve".