19139002368 has 72 divisors (see below), whose sum is σ = 51038193528. Its totient is φ = 6379536384.

The previous prime is 19139002331. The next prime is 19139002411. The reversal of 19139002368 is 86320093191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368880 + ... + 417552.

It is an arithmetic number, because the mean of its divisors is an integer number (708863799).

Almost surely, 2^19139002368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19139002368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25519096764).

19139002368 is an abundant number, since it is smaller than the sum of its proper divisors (31899191160).

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

19139002368 is an frugal number, since it uses more digits than its factorization.

19139002368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48710 (or 48678 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The spelling of 19139002368 in words is "nineteen billion, one hundred thirty-nine million, two thousand, three hundred sixty-eight".