2194155 has 16 divisors (see below), whose sum is σ = 3900960. Its totient is φ = 1170144.

The previous prime is 2194133. The next prime is 2194187. The reversal of 2194155 is 5514912.

It is not a de Polignac number, because 2194155 - 2⁹ = 2193643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 7992 + ... + 8261.

It is an arithmetic number, because the mean of its divisors is an integer number (243810).

2^2194155 is an apocalyptic number.

2194155 is a deficient number, since it is larger than the sum of its proper divisors (1706805).

2194155 is a wasteful number, since it uses less digits than its factorization.

2194155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16267 (or 16261 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 2194155 is about 1481.2680378649. The cubic root of 2194155 is about 129.9438613624.

The spelling of 2194155 in words is "two million, one hundred ninety-four thousand, one hundred fifty-five".