19028927898 has 12 divisors (see below), whose sum is σ = 41229343818. Its totient is φ = 6342975960.

The previous prime is 19028927791. The next prime is 19028927903. The reversal of 19028927898 is 89872982091.

It can be written as a sum of positive squares in only one way, i.e., 12102860169 + 6926067729 = 110013^2 + 83223^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 528581313 + ... + 528581348.

Almost surely, 2^19028927898 is an apocalyptic number.

19028927898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19028927898 is an abundant number, since it is smaller than the sum of its proper divisors (22200415920).

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

19028927898 is a wasteful number, since it uses less digits than its factorization.

19028927898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057162669 (or 1057162666 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 63.

The spelling of 19028927898 in words is "nineteen billion, twenty-eight million, nine hundred twenty-seven thousand, eight hundred ninety-eight".