18084555773 has 4 divisors (see below), whose sum is σ = 18156606048. Its totient is φ = 18012505500.

The previous prime is 18084555739. The next prime is 18084555803. The reversal of 18084555773 is 37755548081.

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 a de Polignac number, because none of the positive numbers 2^k-18084555773 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 (18084555373) 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, 36024761 + ... + 36025262.

It is an arithmetic number, because the mean of its divisors is an integer number (4539151512).

Almost surely, 2^18084555773 is an apocalyptic number.

It is an amenable number.

18084555773 is a deficient number, since it is larger than the sum of its proper divisors (72050275).

18084555773 is an equidigital number, since it uses as much as digits as its factorization.

18084555773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72050274.

The product of its (nonzero) digits is 4704000, while the sum is 53.

The spelling of 18084555773 in words is "eighteen billion, eighty-four million, five hundred fifty-five thousand, seven hundred seventy-three".