19139412228 has 24 divisors (see below), whose sum is σ = 46198582080. Its totient is φ = 6159810720.

The previous prime is 19139412161. The next prime is 19139412233. The reversal of 19139412228 is 82221493191.

It is a self number, because there is not a number n which added to its sum of digits gives 19139412228.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27498808 + ... + 27499503.

It is an arithmetic number, because the mean of its divisors is an integer number (1924940920).

Almost surely, 2^19139412228 is an apocalyptic number.

It is an amenable number.

19139412228 is an abundant number, since it is smaller than the sum of its proper divisors (27059169852).

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

19139412228 is a wasteful number, since it uses less digits than its factorization.

19139412228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54998347 (or 54998345 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The spelling of 19139412228 in words is "nineteen billion, one hundred thirty-nine million, four hundred twelve thousand, two hundred twenty-eight".