118844191 has 2 divisors, whose sum is σ = 118844192. Its totient is φ = 118844190.

The previous prime is 118844171. The next prime is 118844207. The reversal of 118844191 is 191448811.

It is a strong prime.

It is an emirp because it is prime and its reverse (191448811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118844191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118844191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118844101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59422095 + 59422096.

It is an arithmetic number, because the mean of its divisors is an integer number (59422096).

Almost surely, 2^118844191 is an apocalyptic number.

118844191 is a deficient number, since it is larger than the sum of its proper divisors (1).

118844191 is an equidigital number, since it uses as much as digits as its factorization.

118844191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 37.

The square root of 118844191 is about 10901.5682816740. The cubic root of 118844191 is about 491.6537087204.

The spelling of 118844191 in words is "one hundred eighteen million, eight hundred forty-four thousand, one hundred ninety-one".