118958891 has 2 divisors, whose sum is σ = 118958892. Its totient is φ = 118958890.

The previous prime is 118958869. The next prime is 118958893. The reversal of 118958891 is 198859811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118958891 - 2¹⁴ = 118942507 is a prime.

It is a Sophie Germain prime.

Together with 118958893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118958893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59479445 + 59479446.

It is an arithmetic number, because the mean of its divisors is an integer number (59479446).

Almost surely, 2^118958891 is an apocalyptic number.

118958891 is a deficient number, since it is larger than the sum of its proper divisors (1).

118958891 is an equidigital number, since it uses as much as digits as its factorization.

118958891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 50.

The square root of 118958891 is about 10906.8277239535. The cubic root of 118958891 is about 491.8118276478.

The spelling of 118958891 in words is "one hundred eighteen million, nine hundred fifty-eight thousand, eight hundred ninety-one".