118238717 has 4 divisors (see below), whose sum is σ = 121434396. Its totient is φ = 115043040.

The previous prime is 118238693. The next prime is 118238737. The reversal of 118238717 is 717832811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 717832811 = 61 ⋅11767751.

It can be written as a sum of positive squares in 2 ways, for example, as 92371321 + 25867396 = 9611^2 + 5086^2 .

It is a cyclic number.

It is not a de Polignac number, because 118238717 - 2¹² = 118234621 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 (118238737) 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, 1597784 + ... + 1597857.

It is an arithmetic number, because the mean of its divisors is an integer number (30358599).

Almost surely, 2^118238717 is an apocalyptic number.

It is an amenable number.

118238717 is a deficient number, since it is larger than the sum of its proper divisors (3195679).

118238717 is an equidigital number, since it uses as much as digits as its factorization.

118238717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195678.

The product of its digits is 18816, while the sum is 38.

The square root of 118238717 is about 10873.7627801971. The cubic root of 118238717 is about 490.8173461246.

The spelling of 118238717 in words is "one hundred eighteen million, two hundred thirty-eight thousand, seven hundred seventeen".