2818938685 has 8 divisors (see below), whose sum is σ = 3383522136. Its totient is φ = 2254620480.

The previous prime is 2818938671. The next prime is 2818938697. The reversal of 2818938685 is 5868398182.

It can be written as a sum of positive squares in 4 ways, for example, as 255136729 + 2563801956 = 15973^2 + 50634^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2818938685 - 2⁵ = 2818938653 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 7 ways as a sum of consecutive naturals, for example, 42126 + ... + 86095.

It is an arithmetic number, because the mean of its divisors is an integer number (422940267).

Almost surely, 2^2818938685 is an apocalyptic number.

It is an amenable number.

2818938685 is a deficient number, since it is larger than the sum of its proper divisors (564583451).

2818938685 is a wasteful number, since it uses less digits than its factorization.

2818938685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132623.

The product of its digits is 6635520, while the sum is 58.

The square root of 2818938685 is about 53093.6783901813. The cubic root of 2818938685 is about 1412.6303840798.

The spelling of 2818938685 in words is "two billion, eight hundred eighteen million, nine hundred thirty-eight thousand, six hundred eighty-five".