2188013 has 4 divisors (see below), whose sum is σ = 2283168. Its totient is φ = 2092860.

The previous prime is 2188001. The next prime is 2188031. The reversal of 2188013 is 3108812.

2188013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2188013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 95131 = 2188013 / (2 + 1 + 8 + 8 + 0 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2188013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47543 + ... + 47588.

It is an arithmetic number, because the mean of its divisors is an integer number (570792).

2^2188013 is an apocalyptic number.

2188013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2188013 is a deficient number, since it is larger than the sum of its proper divisors (95155).

2188013 is an equidigital number, since it uses as much as digits as its factorization.

2188013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95154.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2188013 is about 1479.1933612615. The cubic root of 2188013 is about 129.8224993702.

The spelling of 2188013 in words is "two million, one hundred eighty-eight thousand, thirteen".