2113518 has 32 divisors (see below), whose sum is σ = 4764672. Its totient is φ = 619200.

The previous prime is 2113513. The next prime is 2113523. The reversal of 2113518 is 8153112.

It is an interprime number because it is at equal distance from previous prime (2113513) and next prime (2113523).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2113494 and 2113503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530 + ... + 2562.

It is an arithmetic number, because the mean of its divisors is an integer number (148896).

2^2113518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2382336).

2113518 is an abundant number, since it is smaller than the sum of its proper divisors (2651154).

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

2113518 is a wasteful number, since it uses less digits than its factorization.

2113518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 240, while the sum is 21.

The square root of 2113518 is about 1453.7943458413. The cubic root of 2113518 is about 128.3321047089.

The spelling of 2113518 in words is "two million, one hundred thirteen thousand, five hundred eighteen".