2194915 has 4 divisors (see below), whose sum is σ = 2633904. Its totient is φ = 1755928.

The previous prime is 2194903. The next prime is 2194931. The reversal of 2194915 is 5194912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2194915 - 2⁵ = 2194883 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219487 + ... + 219496.

It is an arithmetic number, because the mean of its divisors is an integer number (658476).

2^2194915 is an apocalyptic number.

2194915 is a deficient number, since it is larger than the sum of its proper divisors (438989).

2194915 is an equidigital number, since it uses as much as digits as its factorization.

2194915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438988.

The product of its digits is 3240, while the sum is 31.

The square root of 2194915 is about 1481.5245526146. The cubic root of 2194915 is about 129.9588627235.

The spelling of 2194915 in words is "two million, one hundred ninety-four thousand, nine hundred fifteen".