18061305 has 32 divisors (see below), whose sum is σ = 30720000. Its totient is φ = 9035712.

The previous prime is 18061297. The next prime is 18061319. The reversal of 18061305 is 50316081.

It is not a de Polignac number, because 18061305 - 2³ = 18061297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35946 + ... + 36444.

It is an arithmetic number, because the mean of its divisors is an integer number (960000).

Almost surely, 2^18061305 is an apocalyptic number.

18061305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18061305 is a deficient number, since it is larger than the sum of its proper divisors (12658695).

18061305 is a wasteful number, since it uses less digits than its factorization.

18061305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 18061305 is about 4249.8594094393. The cubic root of 18061305 is about 262.3713292294.

Adding to 18061305 its reverse (50316081), we get a palindrome (68377386).

The spelling of 18061305 in words is "eighteen million, sixty-one thousand, three hundred five".