19267897260 has 96 divisors (see below), whose sum is σ = 55957470912. Its totient is φ = 4949683200.

The previous prime is 19267897247. The next prime is 19267897261. The reversal of 19267897260 is 6279876291.

It is a self number, because there is not a number n which added to its sum of digits gives 19267897260.

It is not an unprimeable number, because it can be changed into a prime (19267897261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181254 + ... + 267186.

It is an arithmetic number, because the mean of its divisors is an integer number (582890322).

Almost surely, 2^19267897260 is an apocalyptic number.

19267897260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19267897260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27978735456).

19267897260 is an abundant number, since it is smaller than the sum of its proper divisors (36689573652).

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

19267897260 is a wasteful number, since it uses less digits than its factorization.

19267897260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86083 (or 86081 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 19267897260 in words is "nineteen billion, two hundred sixty-seven million, eight hundred ninety-seven thousand, two hundred sixty".