2646895818 has 96 divisors (see below), whose sum is σ = 6551855424. Its totient is φ = 708331008.

The previous prime is 2646895777. The next prime is 2646895837. The reversal of 2646895818 is 8185986462.

It is a happy number.

2646895818 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1133380 + ... + 1135712.

It is an arithmetic number, because the mean of its divisors is an integer number (68248494).

Almost surely, 2^2646895818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646895818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3275927712).

2646895818 is an abundant number, since it is smaller than the sum of its proper divisors (3904959606).

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

2646895818 is a wasteful number, since it uses less digits than its factorization.

2646895818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596 (or 2589 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 57.

The square root of 2646895818 is about 51447.9913893633. The cubic root of 2646895818 is about 1383.2869588879.

The spelling of 2646895818 in words is "two billion, six hundred forty-six million, eight hundred ninety-five thousand, eight hundred eighteen".