818985260207 has 4 divisors (see below), whose sum is σ = 819660434760. Its totient is φ = 818310085656.

The previous prime is 818985260111. The next prime is 818985260213. The reversal of 818985260207 is 702062589818.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 818985260207 - 2²⁶ = 818918151343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818985260237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337585457 + ... + 337587882.

It is an arithmetic number, because the mean of its divisors is an integer number (204915108690).

Almost surely, 2^818985260207 is an apocalyptic number.

818985260207 is a deficient number, since it is larger than the sum of its proper divisors (675174553).

818985260207 is a wasteful number, since it uses less digits than its factorization.

818985260207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675174552.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 818985260207 in words is "eight hundred eighteen billion, nine hundred eighty-five million, two hundred sixty thousand, two hundred seven".