18135059 has 4 divisors (see below), whose sum is σ = 18144720. Its totient is φ = 18125400.

The previous prime is 18135053. The next prime is 18135067. The reversal of 18135059 is 95053181.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18135059 - 2²⁴ = 1357843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18135053) 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, 1004 + ... + 6105.

It is an arithmetic number, because the mean of its divisors is an integer number (4536180).

Almost surely, 2^18135059 is an apocalyptic number.

18135059 is a deficient number, since it is larger than the sum of its proper divisors (9661).

18135059 is an equidigital number, since it uses as much as digits as its factorization.

18135059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9660.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 18135059 is about 4258.5277972558. The cubic root of 18135059 is about 262.7279785141.

The spelling of 18135059 in words is "eighteen million, one hundred thirty-five thousand, fifty-nine".