17864658242 has 18 divisors (see below), whose sum is σ = 27761403033. Its totient is φ = 8621671464.

The previous prime is 17864658197. The next prime is 17864658263. The reversal of 17864658242 is 24285646871.

It can be written as a sum of positive squares in 2 ways, for example, as 17854037161 + 10621081 = 133619^2 + 3259^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=94511.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5480009 + ... + 5483267.

Almost surely, 2^17864658242 is an apocalyptic number.

17864658242 is a deficient number, since it is larger than the sum of its proper divisors (9896744791).

17864658242 is an frugal number, since it uses more digits than its factorization.

17864658242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578 (or 3290 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 53.

The spelling of 17864658242 in words is "seventeen billion, eight hundred sixty-four million, six hundred fifty-eight thousand, two hundred forty-two".