118989785 has 4 divisors (see below), whose sum is σ = 142787748. Its totient is φ = 95191824.

The previous prime is 118989779. The next prime is 118989797. The reversal of 118989785 is 587989811.

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 83978896 + 35010889 = 9164^2 + 5917^2 .

It is a cyclic number.

It is not a de Polignac number, because 118989785 - 2¹⁰ = 118988761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 118989785.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11898974 + ... + 11898983.

It is an arithmetic number, because the mean of its divisors is an integer number (35696937).

Almost surely, 2^118989785 is an apocalyptic number.

It is an amenable number.

118989785 is a deficient number, since it is larger than the sum of its proper divisors (23797963).

118989785 is an equidigital number, since it uses as much as digits as its factorization.

118989785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23797962.

The product of its digits is 1451520, while the sum is 56.

The square root of 118989785 is about 10908.2439008302. The cubic root of 118989785 is about 491.8543989914.

The spelling of 118989785 in words is "one hundred eighteen million, nine hundred eighty-nine thousand, seven hundred eighty-five".