118123615 has 4 divisors (see below), whose sum is σ = 141748344. Its totient is φ = 94498888.

The previous prime is 118123597. The next prime is 118123619. The reversal of 118123615 is 516321811.

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 118123615 - 2¹³ = 118115423 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 (118123619) 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, 11812357 + ... + 11812366.

It is an arithmetic number, because the mean of its divisors is an integer number (35437086).

Almost surely, 2^118123615 is an apocalyptic number.

118123615 is a deficient number, since it is larger than the sum of its proper divisors (23624729).

118123615 is an equidigital number, since it uses as much as digits as its factorization.

118123615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23624728.

The product of its digits is 1440, while the sum is 28.

The square root of 118123615 is about 10868.4688434020. The cubic root of 118123615 is about 490.6580288798.

The spelling of 118123615 in words is "one hundred eighteen million, one hundred twenty-three thousand, six hundred fifteen".