18081075 has 18 divisors (see below), whose sum is σ = 29955052. Its totient is φ = 9623600.

The previous prime is 18081053. The next prime is 18081079. The reversal of 18081075 is 57018081.

It is not a de Polignac number, because 18081075 - 2¹³ = 18072883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18081079) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 36580 + ... + 37070.

Almost surely, 2^18081075 is an apocalyptic number.

18081075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18081075 is a deficient number, since it is larger than the sum of its proper divisors (11873977).

18081075 is an frugal number, since it uses more digits than its factorization.

18081075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 18081075 is about 4252.1847325816. The cubic root of 18081075 is about 262.4670253364.

The spelling of 18081075 in words is "eighteen million, eighty-one thousand, seventy-five".