17982866485 has 4 divisors (see below), whose sum is σ = 21579439788. Its totient is φ = 14386293184.

The previous prime is 17982866479. The next prime is 17982866491. The reversal of 17982866485 is 58466828971.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (17982866479) and next prime (17982866491).

It can be written as a sum of positive squares in 2 ways, for example, as 8589767761 + 9393098724 = 92681^2 + 96918^2 .

It is a cyclic number.

It is not a de Polignac number, because 17982866485 - 2⁷ = 17982866357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1798286644 + ... + 1798286653.

It is an arithmetic number, because the mean of its divisors is an integer number (5394859947).

Almost surely, 2^17982866485 is an apocalyptic number.

It is an amenable number.

17982866485 is a deficient number, since it is larger than the sum of its proper divisors (3596573303).

17982866485 is an equidigital number, since it uses as much as digits as its factorization.

17982866485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596573302.

The product of its digits is 46448640, while the sum is 64.

The spelling of 17982866485 in words is "seventeen billion, nine hundred eighty-two million, eight hundred sixty-six thousand, four hundred eighty-five".