2195918 has 8 divisors (see below), whose sum is σ = 3300912. Its totient is φ = 1095616.

The previous prime is 2195917. The next prime is 2195923. The reversal of 2195918 is 8195912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (412614).

2^2195918 is an apocalyptic number.

2195918 is a deficient number, since it is larger than the sum of its proper divisors (1104994).

2195918 is a wasteful number, since it uses less digits than its factorization.

2195918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346.

The product of its digits is 6480, while the sum is 35.

The square root of 2195918 is about 1481.8630166112. The cubic root of 2195918 is about 129.9786552727.

It can be divided in two parts, 2195 and 918, that added together give a palindrome (3113).

The spelling of 2195918 in words is "two million, one hundred ninety-five thousand, nine hundred eighteen".