18160506 has 48 divisors (see below), whose sum is σ = 48432384. Its totient is φ = 4789152.

The previous prime is 18160487. The next prime is 18160511. The reversal of 18160506 is 60506181.

It is a self number, because there is not a number n which added to its sum of digits gives 18160506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3906 + ... + 7181.

It is an arithmetic number, because the mean of its divisors is an integer number (1009008).

Almost surely, 2^18160506 is an apocalyptic number.

18160506 is an abundant number, since it is smaller than the sum of its proper divisors (30271878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18160506 is a wasteful number, since it uses less digits than its factorization.

18160506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11115 (or 11112 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 18160506 is about 4261.5145195106. The cubic root of 18160506 is about 262.8508071601.

Adding to 18160506 its reverse (60506181), we get a palindrome (78666687).

The spelling of 18160506 in words is "eighteen million, one hundred sixty thousand, five hundred six".