18165132773 has 4 divisors (see below), whose sum is σ = 18167434560. Its totient is φ = 18162830988.

The previous prime is 18165132767. The next prime is 18165132793. The reversal of 18165132773 is 37723156181.

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.

It is a cyclic number.

It is not a de Polignac number, because 18165132773 - 2¹⁰ = 18165131749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18165132793) 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, 1139015 + ... + 1154852.

It is an arithmetic number, because the mean of its divisors is an integer number (4541858640).

Almost surely, 2^18165132773 is an apocalyptic number.

It is an amenable number.

18165132773 is a deficient number, since it is larger than the sum of its proper divisors (2301787).

18165132773 is an equidigital number, since it uses as much as digits as its factorization.

18165132773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301786.

The product of its digits is 211680, while the sum is 44.

The spelling of 18165132773 in words is "eighteen billion, one hundred sixty-five million, one hundred thirty-two thousand, seven hundred seventy-three".