2188915 has 8 divisors (see below), whose sum is σ = 2688048. Its totient is φ = 1710240.

The previous prime is 2188913. The next prime is 2188919. The reversal of 2188915 is 5198812.

2188915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2188915 - 2¹ = 2188913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2188913) 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 7 ways as a sum of consecutive naturals, for example, 4876 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (336006).

2^2188915 is an apocalyptic number.

2188915 is a deficient number, since it is larger than the sum of its proper divisors (499133).

2188915 is a wasteful number, since it uses less digits than its factorization.

2188915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10229.

The product of its digits is 5760, while the sum is 34.

The square root of 2188915 is about 1479.4982257509. The cubic root of 2188915 is about 129.8403365291.

It can be divided in two parts, 21889 and 15, that added together give a square (21904 = 148²).

The spelling of 2188915 in words is "two million, one hundred eighty-eight thousand, nine hundred fifteen".