18226115 has 8 divisors (see below), whose sum is σ = 21895920. Its totient is φ = 14564512.

The previous prime is 18226093. The next prime is 18226121. The reversal of 18226115 is 51162281.

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

It is a cyclic number.

It is not a de Polignac number, because 18226115 - 2⁸ = 18225859 is a prime.

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, 5141 + ... + 7929.

It is an arithmetic number, because the mean of its divisors is an integer number (2736990).

Almost surely, 2^18226115 is an apocalyptic number.

18226115 is a deficient number, since it is larger than the sum of its proper divisors (3669805).

18226115 is a wasteful number, since it uses less digits than its factorization.

18226115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101.

The product of its digits is 960, while the sum is 26.

The square root of 18226115 is about 4269.2054295852. The cubic root of 18226115 is about 263.1669630454.

Adding to 18226115 its reverse (51162281), we get a palindrome (69388396).

The spelling of 18226115 in words is "eighteen million, two hundred twenty-six thousand, one hundred fifteen".