118223515 has 4 divisors (see below), whose sum is σ = 141868224. Its totient is φ = 94578808.

The previous prime is 118223513. The next prime is 118223537. The reversal of 118223515 is 515322811.

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 118223515 - 2¹ = 118223513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118223513) 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, 11822347 + ... + 11822356.

It is an arithmetic number, because the mean of its divisors is an integer number (35467056).

Almost surely, 2^118223515 is an apocalyptic number.

118223515 is a deficient number, since it is larger than the sum of its proper divisors (23644709).

118223515 is an equidigital number, since it uses as much as digits as its factorization.

118223515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23644708.

The product of its digits is 2400, while the sum is 28.

The square root of 118223515 is about 10873.0637356727. The cubic root of 118223515 is about 490.7963103611.

The spelling of 118223515 in words is "one hundred eighteen million, two hundred twenty-three thousand, five hundred fifteen".