118911869 has 2 divisors, whose sum is σ = 118911870. Its totient is φ = 118911868.

The previous prime is 118911841. The next prime is 118911883. The reversal of 118911869 is 968119811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63409369 + 55502500 = 7963^2 + 7450^2 .

It is an emirp because it is prime and its reverse (968119811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118911869 is a prime.

It is a super-2 number, since 2×118911869² = 28280065178146322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118911829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59455934 + 59455935.

It is an arithmetic number, because the mean of its divisors is an integer number (59455935).

Almost surely, 2^118911869 is an apocalyptic number.

It is an amenable number.

118911869 is a deficient number, since it is larger than the sum of its proper divisors (1).

118911869 is an equidigital number, since it uses as much as digits as its factorization.

118911869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 44.

The square root of 118911869 is about 10904.6718886906. The cubic root of 118911869 is about 491.7470180784.

The spelling of 118911869 in words is "one hundred eighteen million, nine hundred eleven thousand, eight hundred sixty-nine".