2648865618 has 192 divisors, whose sum is σ = 7242301440. Its totient is φ = 714420000.

The previous prime is 2648865617. The next prime is 2648865619. The reversal of 2648865618 is 8165688462.

It is an interprime number because it is at equal distance from previous prime (2648865617) and next prime (2648865619).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2648865617) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3526743 + ... + 3527493.

It is an arithmetic number, because the mean of its divisors is an integer number (37720320).

Almost surely, 2^2648865618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2648865618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3621150720).

2648865618 is an abundant number, since it is smaller than the sum of its proper divisors (4593435822).

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

2648865618 is a wasteful number, since it uses less digits than its factorization.

2648865618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 837 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 2648865618 is about 51467.1314335664. The cubic root of 2648865618 is about 1383.6300177253.

The spelling of 2648865618 in words is "two billion, six hundred forty-eight million, eight hundred sixty-five thousand, six hundred eighteen".