118728669 has 4 divisors (see below), whose sum is σ = 158304896. Its totient is φ = 79152444.

The previous prime is 118728653. The next prime is 118728683. The reversal of 118728669 is 966827811.

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.

It is not a de Polignac number, because 118728669 - 2⁴ = 118728653 is a prime.

It is a super-2 number, since 2×118728669² = 28192993685023122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118728619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19788109 + ... + 19788114.

It is an arithmetic number, because the mean of its divisors is an integer number (39576224).

Almost surely, 2^118728669 is an apocalyptic number.

It is an amenable number.

118728669 is a deficient number, since it is larger than the sum of its proper divisors (39576227).

118728669 is an equidigital number, since it uses as much as digits as its factorization.

118728669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39576226.

The product of its digits is 290304, while the sum is 48.

The square root of 118728669 is about 10896.2685814916. The cubic root of 118728669 is about 491.4943537637.

The spelling of 118728669 in words is "one hundred eighteen million, seven hundred twenty-eight thousand, six hundred sixty-nine".