118227391 has 2 divisors, whose sum is σ = 118227392. Its totient is φ = 118227390.

The previous prime is 118227379. The next prime is 118227407. The reversal of 118227391 is 193722811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118227391 - 2⁵ = 118227359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118227311) 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, 59113695 + 59113696.

It is an arithmetic number, because the mean of its divisors is an integer number (59113696).

Almost surely, 2^118227391 is an apocalyptic number.

118227391 is a deficient number, since it is larger than the sum of its proper divisors (1).

118227391 is an equidigital number, since it uses as much as digits as its factorization.

118227391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 118227391 is about 10873.2419728432. The cubic root of 118227391 is about 490.8016739463.

The spelling of 118227391 in words is "one hundred eighteen million, two hundred twenty-seven thousand, three hundred ninety-one".