18132073 has 4 divisors (see below), whose sum is σ = 18920448. Its totient is φ = 17343700.

The previous prime is 18132071. The next prime is 18132089. The reversal of 18132073 is 37023181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37023181 = 13 ⋅2847937.

It is a cyclic number.

It is not a de Polignac number, because 18132073 - 2¹ = 18132071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18132071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394153 + ... + 394198.

It is an arithmetic number, because the mean of its divisors is an integer number (4730112).

Almost surely, 2^18132073 is an apocalyptic number.

It is an amenable number.

18132073 is a deficient number, since it is larger than the sum of its proper divisors (788375).

18132073 is an equidigital number, since it uses as much as digits as its factorization.

18132073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788374.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 18132073 is about 4258.1771921798. The cubic root of 18132073 is about 262.7135580334.

The spelling of 18132073 in words is "eighteen million, one hundred thirty-two thousand, seventy-three".