11818197 has 32 divisors (see below), whose sum is σ = 18278400. Its totient is φ = 7541424.

The previous prime is 11818181. The next prime is 11818199. The reversal of 11818197 is 79181811.

It is a happy number.

11818197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11818197 - 2⁴ = 11818181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11818199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84954 + ... + 85092.

It is an arithmetic number, because the mean of its divisors is an integer number (571200).

Almost surely, 2^11818197 is an apocalyptic number.

It is an amenable number.

11818197 is a deficient number, since it is larger than the sum of its proper divisors (6460203).

11818197 is a wasteful number, since it uses less digits than its factorization.

11818197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 256 counting only the distinct ones).

The product of its digits is 4032, while the sum is 36.

The square root of 11818197 is about 3437.7604628595. The cubic root of 11818197 is about 227.7807795934.

The spelling of 11818197 in words is "eleven million, eight hundred eighteen thousand, one hundred ninety-seven".