2818645684 has 6 divisors (see below), whose sum is σ = 4932629954. Its totient is φ = 1409322840.

The previous prime is 2818645673. The next prime is 2818645693. The reversal of 2818645684 is 4865468182.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2522048400 + 296597284 = 50220^2 + 17222^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352330707 + ... + 352330714.

Almost surely, 2^2818645684 is an apocalyptic number.

It is an amenable number.

2818645684 is a deficient number, since it is larger than the sum of its proper divisors (2113984270).

2818645684 is a wasteful number, since it uses less digits than its factorization.

2818645684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704661425 (or 704661423 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 52.

The square root of 2818645684 is about 53090.9190351796. The cubic root of 2818645684 is about 1412.5814393643.

The spelling of 2818645684 in words is "two billion, eight hundred eighteen million, six hundred forty-five thousand, six hundred eighty-four".