19139123286 has 32 divisors (see below), whose sum is σ = 42612769920. Its totient is φ = 6367500072.

The previous prime is 19139123219. The next prime is 19139123303. The reversal of 19139123286 is 68232193191.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310600 + ... + 367083.

It is an arithmetic number, because the mean of its divisors is an integer number (1331649060).

Almost surely, 2^19139123286 is an apocalyptic number.

19139123286 is an abundant number, since it is smaller than the sum of its proper divisors (23473646634).

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

19139123286 is a wasteful number, since it uses less digits than its factorization.

19139123286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678217 (or 678211 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The spelling of 19139123286 in words is "nineteen billion, one hundred thirty-nine million, one hundred twenty-three thousand, two hundred eighty-six".