118628691 has 16 divisors (see below), whose sum is σ = 160780800. Its totient is φ = 77789088.

The previous prime is 118628683. The next prime is 118628707. The reversal of 118628691 is 196826811.

It is not a de Polignac number, because 118628691 - 2³ = 118628683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118628651) 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, 74340 + ... + 75918.

It is an arithmetic number, because the mean of its divisors is an integer number (10048800).

Almost surely, 2^118628691 is an apocalyptic number.

118628691 is a deficient number, since it is larger than the sum of its proper divisors (42152109).

118628691 is a wasteful number, since it uses less digits than its factorization.

118628691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978.

The product of its digits is 41472, while the sum is 42.

The square root of 118628691 is about 10891.6798979772. The cubic root of 118628691 is about 491.3563572655.

The spelling of 118628691 in words is "one hundred eighteen million, six hundred twenty-eight thousand, six hundred ninety-one".