118938515 has 4 divisors (see below), whose sum is σ = 142726224. Its totient is φ = 95150808.

The previous prime is 118938493. The next prime is 118938557. The reversal of 118938515 is 515839811.

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 118938515 - 2¹² = 118934419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11893847 + ... + 11893856.

It is an arithmetic number, because the mean of its divisors is an integer number (35681556).

Almost surely, 2^118938515 is an apocalyptic number.

118938515 is a deficient number, since it is larger than the sum of its proper divisors (23787709).

118938515 is an equidigital number, since it uses as much as digits as its factorization.

118938515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23787708.

The product of its digits is 43200, while the sum is 41.

The square root of 118938515 is about 10905.8935901649. The cubic root of 118938515 is about 491.7837458740.

The spelling of 118938515 in words is "one hundred eighteen million, nine hundred thirty-eight thousand, five hundred fifteen".