2541618 has 40 divisors (see below), whose sum is σ = 5902380. Its totient is φ = 816480.

The previous prime is 2541613. The next prime is 2541677. The reversal of 2541618 is 8161452.

2541618 is a `hidden beast` number, since 2 + 5 + 41 + 618 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2537649 + 3969 = 1593^2 + 63^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2541591 and 2541600.

It is not an unprimeable number, because it can be changed into a prime (2541613) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4428 + ... + 4968.

2^2541618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2541618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2951190).

2541618 is an abundant number, since it is smaller than the sum of its proper divisors (3360762).

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

2541618 is a wasteful number, since it uses less digits than its factorization.

2541618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 575 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2541618 is about 1594.2452759848. The cubic root of 2541618 is about 136.4698641358.

The spelling of 2541618 in words is "two million, five hundred forty-one thousand, six hundred eighteen".