118363891 has 2 divisors, whose sum is σ = 118363892. Its totient is φ = 118363890.

The previous prime is 118363867. The next prime is 118363909. The reversal of 118363891 is 198363811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118363891 - 2¹⁷ = 118232819 is a prime.

It is equal to p_6753766 and since 118363891 and 6753766 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (118363831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59181945 + 59181946.

It is an arithmetic number, because the mean of its divisors is an integer number (59181946).

Almost surely, 2^118363891 is an apocalyptic number.

118363891 is a deficient number, since it is larger than the sum of its proper divisors (1).

118363891 is an equidigital number, since it uses as much as digits as its factorization.

118363891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 118363891 is about 10879.5170389131. The cubic root of 118363891 is about 490.9904871070.

The spelling of 118363891 in words is "one hundred eighteen million, three hundred sixty-three thousand, eight hundred ninety-one".