2188197 has 36 divisors (see below), whose sum is σ = 3717792. Its totient is φ = 1227600.

The previous prime is 2188181. The next prime is 2188213. The reversal of 2188197 is 7918812.

It is an interprime number because it is at equal distance from previous prime (2188181) and next prime (2188213).

It is not a de Polignac number, because 2188197 - 2⁴ = 2188181 is a prime.

It is a super-2 number, since 2×2188197² = 9576412221618, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188117) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70572 + ... + 70602.

It is an arithmetic number, because the mean of its divisors is an integer number (103272).

2^2188197 is an apocalyptic number.

It is an amenable number.

2188197 is a deficient number, since it is larger than the sum of its proper divisors (1529595).

2188197 is a wasteful number, since it uses less digits than its factorization.

2188197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 68 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 2188197 is about 1479.2555560146. The cubic root of 2188197 is about 129.8261383903.

The spelling of 2188197 in words is "two million, one hundred eighty-eight thousand, one hundred ninety-seven".