2618446864 has 60 divisors (see below), whose sum is σ = 5593289328. Its totient is φ = 1177612800.

The previous prime is 2618446861. The next prime is 2618446871. The reversal of 2618446864 is 4686448162.

It is not an unprimeable number, because it can be changed into a prime (2618446861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7769704 + ... + 7770040.

Almost surely, 2^2618446864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2618446864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2796644664).

2618446864 is an abundant number, since it is smaller than the sum of its proper divisors (2974842464).

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

2618446864 is a wasteful number, since it uses less digits than its factorization.

2618446864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 481 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 49.

The square root of 2618446864 is about 51170.7618078918. The cubic root of 2618446864 is about 1378.3132201854.

The spelling of 2618446864 in words is "two billion, six hundred eighteen million, four hundred forty-six thousand, eight hundred sixty-four".