2191192 has 8 divisors (see below), whose sum is σ = 4108500. Its totient is φ = 1095592.

The previous prime is 2191171. The next prime is 2191193. The reversal of 2191192 is 2911912.

2191192 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191193) 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 as a sum of consecutive naturals, namely, 136942 + ... + 136957.

2^2191192 is an apocalyptic number.

It is an amenable number.

2191192 is a deficient number, since it is larger than the sum of its proper divisors (1917308).

2191192 is a wasteful number, since it uses less digits than its factorization.

2191192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273905 (or 273901 counting only the distinct ones).

The product of its digits is 324, while the sum is 25.

The square root of 2191192 is about 1480.2675433853. The cubic root of 2191192 is about 129.8853426913.

The spelling of 2191192 in words is "two million, one hundred ninety-one thousand, one hundred ninety-two".