118989661 has 8 divisors (see below), whose sum is σ = 136889984. Its totient is φ = 101314800.

The previous prime is 118989659. The next prime is 118989679. The reversal of 118989661 is 166989811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 118989661 - 2¹ = 118989659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118989631) 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, 55230 + ... + 57343.

It is an arithmetic number, because the mean of its divisors is an integer number (17111248).

Almost surely, 2^118989661 is an apocalyptic number.

It is an amenable number.

118989661 is a deficient number, since it is larger than the sum of its proper divisors (17900323).

118989661 is a wasteful number, since it uses less digits than its factorization.

118989661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112731.

The product of its digits is 186624, while the sum is 49.

The square root of 118989661 is about 10908.2382170541. The cubic root of 118989661 is about 491.8542281365.

The spelling of 118989661 in words is "one hundred eighteen million, nine hundred eighty-nine thousand, six hundred sixty-one".