118195859 has 2 divisors, whose sum is σ = 118195860. Its totient is φ = 118195858.

The previous prime is 118195813. The next prime is 118195877. The reversal of 118195859 is 958591811.

It is a strong prime.

It is an emirp because it is prime and its reverse (958591811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118195859 - 2¹² = 118191763 is a prime.

It is a super-2 number, since 2×118195859² = 27940522169495762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118195159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59097929 + 59097930.

It is an arithmetic number, because the mean of its divisors is an integer number (59097930).

Almost surely, 2^118195859 is an apocalyptic number.

118195859 is a deficient number, since it is larger than the sum of its proper divisors (1).

118195859 is an equidigital number, since it uses as much as digits as its factorization.

118195859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 47.

The square root of 118195859 is about 10871.7918946234. The cubic root of 118195859 is about 490.7580367533.

The spelling of 118195859 in words is "one hundred eighteen million, one hundred ninety-five thousand, eight hundred fifty-nine".