540261618 has 64 divisors (see below), whose sum is σ = 1236695040. Its totient is φ = 155967552.

The previous prime is 540261611. The next prime is 540261641. The reversal of 540261618 is 816162045.

540261618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (540261611) 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, 156871 + ... + 160277.

It is an arithmetic number, because the mean of its divisors is an integer number (19323360).

Almost surely, 2^540261618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 540261618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618347520).

540261618 is an abundant number, since it is smaller than the sum of its proper divisors (696433422).

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

540261618 is a wasteful number, since it uses less digits than its factorization.

540261618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 540261618 is about 23243.5285187082. The cubic root of 540261618 is about 814.4567712482.

The spelling of 540261618 in words is "five hundred forty million, two hundred sixty-one thousand, six hundred eighteen".