2191612 has 12 divisors (see below), whose sum is σ = 4037320. Its totient is φ = 1038096.

The previous prime is 2191583. The next prime is 2191619. The reversal of 2191612 is 2161912.

2191612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191619) 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, 14343 + ... + 14494.

2^2191612 is an apocalyptic number.

It is an amenable number.

2191612 is a deficient number, since it is larger than the sum of its proper divisors (1845708).

2191612 is a wasteful number, since it uses less digits than its factorization.

2191612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28860 (or 28858 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

The square root of 2191612 is about 1480.4094028342. The cubic root of 2191612 is about 129.8936408169.

The spelling of 2191612 in words is "two million, one hundred ninety-one thousand, six hundred twelve".