118189297 has 4 divisors (see below), whose sum is σ = 122264820. Its totient is φ = 114113776.

The previous prime is 118189283. The next prime is 118189339. The reversal of 118189297 is 792981811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48566961 + 69622336 = 6969^2 + 8344^2 .

It is a cyclic number.

It is not a de Polignac number, because 118189297 - 2¹¹ = 118187249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118189207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037718 + ... + 2037775.

It is an arithmetic number, because the mean of its divisors is an integer number (30566205).

Almost surely, 2^118189297 is an apocalyptic number.

It is an amenable number.

118189297 is a deficient number, since it is larger than the sum of its proper divisors (4075523).

118189297 is an equidigital number, since it uses as much as digits as its factorization.

118189297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4075522.

The product of its digits is 72576, while the sum is 46.

The square root of 118189297 is about 10871.4901002576. The cubic root of 118189297 is about 490.7489546139.

It can be divided in two parts, 11818 and 9297, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 118189297 in words is "one hundred eighteen million, one hundred eighty-nine thousand, two hundred ninety-seven".