118238687 has 4 divisors (see below), whose sum is σ = 135129936. Its totient is φ = 101347440.

The previous prime is 118238669. The next prime is 118238693. The reversal of 118238687 is 786832811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118238687 - 2⁶ = 118238623 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 (118238647) 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, 8445614 + ... + 8445627.

It is an arithmetic number, because the mean of its divisors is an integer number (33782484).

Almost surely, 2^118238687 is an apocalyptic number.

118238687 is a deficient number, since it is larger than the sum of its proper divisors (16891249).

118238687 is an equidigital number, since it uses as much as digits as its factorization.

118238687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16891248.

The product of its digits is 129024, while the sum is 44.

The square root of 118238687 is about 10873.7614007297. The cubic root of 118238687 is about 490.8173046139.

The spelling of 118238687 in words is "one hundred eighteen million, two hundred thirty-eight thousand, six hundred eighty-seven".