19107318834 has 12 divisors (see below), whose sum is σ = 41399190846. Its totient is φ = 6369106272.

The previous prime is 19107318833. The next prime is 19107318871. The reversal of 19107318834 is 43881370191.

It can be written as a sum of positive squares in only one way, i.e., 19081278225 + 26040609 = 138135^2 + 5103^2 .

It is a super-2 number, since 2×19107318834² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19107318834.

It is not an unprimeable number, because it can be changed into a prime (19107318833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 530758839 + ... + 530758874.

Almost surely, 2^19107318834 is an apocalyptic number.

19107318834 is an abundant number, since it is smaller than the sum of its proper divisors (22291872012).

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

19107318834 is a wasteful number, since it uses less digits than its factorization.

19107318834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061517721 (or 1061517718 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 19107318834 in words is "nineteen billion, one hundred seven million, three hundred eighteen thousand, eight hundred thirty-four".