118303661 has 4 divisors (see below), whose sum is σ = 135204192. Its totient is φ = 101403132.

The previous prime is 118303649. The next prime is 118303667. The reversal of 118303661 is 166303811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166303811 = 223 ⋅745757.

It is a cyclic number.

It is not a de Polignac number, because 118303661 - 2⁶ = 118303597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118303667) 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, 8450255 + ... + 8450268.

It is an arithmetic number, because the mean of its divisors is an integer number (33801048).

Almost surely, 2^118303661 is an apocalyptic number.

It is an amenable number.

118303661 is a deficient number, since it is larger than the sum of its proper divisors (16900531).

118303661 is an equidigital number, since it uses as much as digits as its factorization.

118303661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16900530.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 118303661 is about 10876.7486410232. The cubic root of 118303661 is about 490.9071920688.

The spelling of 118303661 in words is "one hundred eighteen million, three hundred three thousand, six hundred sixty-one".