18481115 has 8 divisors (see below), whose sum is σ = 22892928. Its totient is φ = 14307840.

The previous prime is 18481097. The next prime is 18481157. The reversal of 18481115 is 51118481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18481115 - 2⁶ = 18481051 is a prime.

It is a super-2 number, since 2×18481115² = 683103223286450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59462 + ... + 59771.

It is an arithmetic number, because the mean of its divisors is an integer number (2861616).

Almost surely, 2^18481115 is an apocalyptic number.

18481115 is a deficient number, since it is larger than the sum of its proper divisors (4411813).

18481115 is a wasteful number, since it uses less digits than its factorization.

18481115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119269.

The product of its digits is 1280, while the sum is 29.

The square root of 18481115 is about 4298.9667363216. The cubic root of 18481115 is about 264.3885987822.

Adding to 18481115 its reverse (51118481), we get a palindrome (69599596).

The spelling of 18481115 in words is "eighteen million, four hundred eighty-one thousand, one hundred fifteen".