118204491 has 16 divisors (see below), whose sum is σ = 167619200. Its totient is φ = 73882368.

The previous prime is 118204481. The next prime is 118204501. The reversal of 118204491 is 194402811.

It is an interprime number because it is at equal distance from previous prime (118204481) and next prime (118204501).

It is not a de Polignac number, because 118204491 - 2⁵ = 118204459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118204481) 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 in 15 ways as a sum of consecutive naturals, for example, 5161 + ... + 16218.

It is an arithmetic number, because the mean of its divisors is an integer number (10476200).

Almost surely, 2^118204491 is an apocalyptic number.

118204491 is a deficient number, since it is larger than the sum of its proper divisors (49414709).

118204491 is a wasteful number, since it uses less digits than its factorization.

118204491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21498.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 118204491 is about 10872.1888780503. The cubic root of 118204491 is about 490.7699833655.

The spelling of 118204491 in words is "one hundred eighteen million, two hundred four thousand, four hundred ninety-one".