2180197 has 4 divisors (see below), whose sum is σ = 2210976. Its totient is φ = 2149420.

The previous prime is 2180183. The next prime is 2180219. The reversal of 2180197 is 7910812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2180197 - 2¹¹ = 2178149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180107) 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, 15283 + ... + 15424.

It is an arithmetic number, because the mean of its divisors is an integer number (552744).

2^2180197 is an apocalyptic number.

It is an amenable number.

2180197 is a deficient number, since it is larger than the sum of its proper divisors (30779).

2180197 is an equidigital number, since it uses as much as digits as its factorization.

2180197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30778.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 2180197 is about 1476.5490171342. The cubic root of 2180197 is about 129.6677313556.

The spelling of 2180197 in words is "two million, one hundred eighty thousand, one hundred ninety-seven".