118158863 has 4 divisors (see below), whose sum is σ = 118883928. Its totient is φ = 117433800.

The previous prime is 118158851. The next prime is 118158869. The reversal of 118158863 is 368851811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368851811 = 61 ⋅6046751.

It is a cyclic number.

It is not a de Polignac number, because 118158863 - 2¹⁰ = 118157839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118158863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118158869) 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, 362288 + ... + 362613.

It is an arithmetic number, because the mean of its divisors is an integer number (29720982).

Almost surely, 2^118158863 is an apocalyptic number.

118158863 is a deficient number, since it is larger than the sum of its proper divisors (725065).

118158863 is an equidigital number, since it uses as much as digits as its factorization.

118158863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725064.

The product of its digits is 46080, while the sum is 41.

The square root of 118158863 is about 10870.0902940132. The cubic root of 118158863 is about 490.7068280248.

The spelling of 118158863 in words is "one hundred eighteen million, one hundred fifty-eight thousand, eight hundred sixty-three".