118988817 has 16 divisors (see below), whose sum is σ = 160917120. Its totient is φ = 78198912.

The previous prime is 118988813. The next prime is 118988839. The reversal of 118988817 is 718889811.

It is not a de Polignac number, because 118988817 - 2² = 118988813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118988817.

It is not an unprimeable number, because it can be changed into a prime (118988813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163308 + ... + 164034.

It is an arithmetic number, because the mean of its divisors is an integer number (10057320).

Almost surely, 2^118988817 is an apocalyptic number.

It is an amenable number.

118988817 is a deficient number, since it is larger than the sum of its proper divisors (41928303).

118988817 is an equidigital number, since it uses as much as digits as its factorization.

118988817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432.

The product of its digits is 258048, while the sum is 51.

The square root of 118988817 is about 10908.1995306283. The cubic root of 118988817 is about 491.8530652177.

It can be divided in two parts, 118988 and 817, that added together give a triangular number (119805 = T₄₈₉).

The spelling of 118988817 in words is "one hundred eighteen million, nine hundred eighty-eight thousand, eight hundred seventeen".