2645620618 has 8 divisors (see below), whose sum is σ = 3970491840. Its totient is φ = 1322123340.

The previous prime is 2645620603. The next prime is 2645620619. The reversal of 2645620618 is 8160265462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2645620619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338658 + ... + 346381.

It is an arithmetic number, because the mean of its divisors is an integer number (496311480).

Almost surely, 2^2645620618 is an apocalyptic number.

2645620618 is a deficient number, since it is larger than the sum of its proper divisors (1324871222).

2645620618 is a wasteful number, since it uses less digits than its factorization.

2645620618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686972.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2645620618 is about 51435.5967983264. The cubic root of 2645620618 is about 1383.0647802803.

It can be divided in two parts, 26456 and 20618, that added together give a palindrome (47074).

The spelling of 2645620618 in words is "two billion, six hundred forty-five million, six hundred twenty thousand, six hundred eighteen".