17864940331 has 12 divisors (see below), whose sum is σ = 22004117208. Its totient is φ = 14412052032.

The previous prime is 17864940299. The next prime is 17864940377. The reversal of 17864940331 is 13304946871.

It is not a de Polignac number, because 17864940331 - 2⁵ = 17864940299 is a prime.

It is a super-2 number, since 2×17864940331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17861940331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10722421 + ... + 10724086.

It is an arithmetic number, because the mean of its divisors is an integer number (1833676434).

Almost surely, 2^17864940331 is an apocalyptic number.

17864940331 is a deficient number, since it is larger than the sum of its proper divisors (4139176877).

17864940331 is a wasteful number, since it uses less digits than its factorization.

17864940331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21446538 (or 21446531 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 17864940331 in words is "seventeen billion, eight hundred sixty-four million, nine hundred forty thousand, three hundred thirty-one".