18115941 has 8 divisors (see below), whose sum is σ = 24175360. Its totient is φ = 12066912.

The previous prime is 18115939. The next prime is 18115967. The reversal of 18115941 is 14951181.

It is a happy number.

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

It is not a de Polignac number, because 18115941 - 2¹ = 18115939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18115899 and 18115908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18115901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3561 + ... + 6993.

It is an arithmetic number, because the mean of its divisors is an integer number (3021920).

Almost surely, 2^18115941 is an apocalyptic number.

It is an amenable number.

18115941 is a deficient number, since it is larger than the sum of its proper divisors (6059419).

18115941 is a wasteful number, since it uses less digits than its factorization.

18115941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5195.

The product of its digits is 1440, while the sum is 30.

The square root of 18115941 is about 4256.2825329153. The cubic root of 18115941 is about 262.6356233408.

The spelling of 18115941 in words is "eighteen million, one hundred fifteen thousand, nine hundred forty-one".