118212183 has 8 divisors (see below), whose sum is σ = 175129200. Its totient is φ = 78808104.

The previous prime is 118212181. The next prime is 118212217. The reversal of 118212183 is 381212811.

It is not a de Polignac number, because 118212183 - 2¹ = 118212181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4378229 = 118212183 / (1 + 1 + 8 + 2 + 1 + 2 + 1 + 8 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118212181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2189088 + ... + 2189141.

It is an arithmetic number, because the mean of its divisors is an integer number (21891150).

Almost surely, 2^118212183 is an apocalyptic number.

118212183 is a deficient number, since it is larger than the sum of its proper divisors (56917017).

118212183 is an equidigital number, since it uses as much as digits as its factorization.

118212183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4378238 (or 4378232 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 118212183 is about 10872.5426189093. The cubic root of 118212183 is about 490.7806285358.

Adding to 118212183 its reverse (381212811), we get a palindrome (499424994).

The spelling of 118212183 in words is "one hundred eighteen million, two hundred twelve thousand, one hundred eighty-three".