2818645644 has 24 divisors (see below), whose sum is σ = 6754593328. Its totient is φ = 914155200.

The previous prime is 2818645597. The next prime is 2818645651. The reversal of 2818645644 is 4465468182.

It is a junction number, because it is equal to n+sod(n) for n = 2818645593 and 2818645602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3173707 + ... + 3174594.

Almost surely, 2^2818645644 is an apocalyptic number.

It is an amenable number.

2818645644 is an abundant number, since it is smaller than the sum of its proper divisors (3935947684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2818645644 is a wasteful number, since it uses less digits than its factorization.

2818645644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348345 (or 6348343 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 48.

The square root of 2818645644 is about 53090.9186584674. The cubic root of 2818645644 is about 1412.5814326822.

The spelling of 2818645644 in words is "two billion, eight hundred eighteen million, six hundred forty-five thousand, six hundred forty-four".