118422091 has 2 divisors, whose sum is σ = 118422092. Its totient is φ = 118422090.

The previous prime is 118422061. The next prime is 118422149. The reversal of 118422091 is 190224811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118422091 - 2⁹ = 118421579 is a prime.

It is not a weakly prime, because it can be changed into another prime (118422011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59211045 + 59211046.

It is an arithmetic number, because the mean of its divisors is an integer number (59211046).

Almost surely, 2^118422091 is an apocalyptic number.

118422091 is a deficient number, since it is larger than the sum of its proper divisors (1).

118422091 is an equidigital number, since it uses as much as digits as its factorization.

118422091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 118422091 is about 10882.1914612821. The cubic root of 118422091 is about 491.0709479181.

The spelling of 118422091 in words is "one hundred eighteen million, four hundred twenty-two thousand, ninety-one".