2140305618 has 64 divisors (see below), whose sum is σ = 5040921600. Its totient is φ = 598973760.

The previous prime is 2140305617. The next prime is 2140305623. The reversal of 2140305618 is 8165030412.

It is not an unprimeable number, because it can be changed into a prime (2140305617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19713 + ... + 68331.

It is an arithmetic number, because the mean of its divisors is an integer number (78764400).

Almost surely, 2^2140305618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2140305618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2520460800).

2140305618 is an abundant number, since it is smaller than the sum of its proper divisors (2900615982).

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

2140305618 is a wasteful number, since it uses less digits than its factorization.

2140305618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48687.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2140305618 is about 46263.4371615426. The cubic root of 2140305618 is about 1288.7200849971.

The spelling of 2140305618 in words is "two billion, one hundred forty million, three hundred five thousand, six hundred eighteen".