118500791 has 4 divisors (see below), whose sum is σ = 118922784. Its totient is φ = 118078800.

The previous prime is 118500787. The next prime is 118500839. The reversal of 118500791 is 197005811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197005811 = 47 ⋅4191613.

It is a cyclic number.

It is not a de Polignac number, because 118500791 - 2² = 118500787 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 (118500731) 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, 210575 + ... + 211136.

It is an arithmetic number, because the mean of its divisors is an integer number (29730696).

Almost surely, 2^118500791 is an apocalyptic number.

118500791 is a deficient number, since it is larger than the sum of its proper divisors (421993).

118500791 is an equidigital number, since it uses as much as digits as its factorization.

118500791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421992.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 118500791 is about 10885.8068603113. The cubic root of 118500791 is about 491.1797078213.

The spelling of 118500791 in words is "one hundred eighteen million, five hundred thousand, seven hundred ninety-one".