191418 has 16 divisors (see below), whose sum is σ = 389856. Its totient is φ = 62640.

The previous prime is 191413. The next prime is 191441. The reversal of 191418 is 814191.

191418 is nontrivially palindromic in base 15.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (191413) by changing a digit.

191418 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105 + ... + 627.

It is an arithmetic number, because the mean of its divisors is an integer number (24366).

2¹⁹¹⁴¹⁸ is an apocalyptic number.

191418 is an abundant number, since it is smaller than the sum of its proper divisors (198438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191418 is a wasteful number, since it uses less digits than its factorization.

191418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589.

The product of its digits is 288, while the sum is 24.

The square root of 191418 is about 437.5134283653. The cubic root of 191418 is about 57.6316328947.

It can be divided in two parts, 1 and 91418, that added together give a palindrome (91419).

The spelling of 191418 in words is "one hundred ninety-one thousand, four hundred eighteen".