118189505 has 8 divisors (see below), whose sum is σ = 162088512. Its totient is φ = 81044208.

The previous prime is 118189501. The next prime is 118189517. The reversal of 118189505 is 505981811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 118189505 - 2² = 118189501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118189501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1688387 + ... + 1688456.

It is an arithmetic number, because the mean of its divisors is an integer number (20261064).

Almost surely, 2^118189505 is an apocalyptic number.

It is an amenable number.

118189505 is a deficient number, since it is larger than the sum of its proper divisors (43899007).

118189505 is an equidigital number, since it uses as much as digits as its factorization.

118189505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376855.

The product of its (nonzero) digits is 14400, while the sum is 38.

The square root of 118189505 is about 10871.4996665593. The cubic root of 118189505 is about 490.7492425015.

The spelling of 118189505 in words is "one hundred eighteen million, one hundred eighty-nine thousand, five hundred five".