18050774165 has 32 divisors (see below), whose sum is σ = 23079828960. Its totient is φ = 13505716224.

The previous prime is 18050774153. The next prime is 18050774173. The reversal of 18050774165 is 56147705081.

It can be written as a sum of positive squares in 16 ways, for example, as 8392208881 + 9658565284 = 91609^2 + 98278^2 .

It is a cyclic number.

It is not a de Polignac number, because 18050774165 - 2⁴ = 18050774149 is a prime.

It is a Curzon number.

It is a congruent number.

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, 10561331 + ... + 10563039.

It is an arithmetic number, because the mean of its divisors is an integer number (721244655).

Almost surely, 2^18050774165 is an apocalyptic number.

It is an amenable number.

18050774165 is a deficient number, since it is larger than the sum of its proper divisors (5029054795).

18050774165 is a wasteful number, since it uses less digits than its factorization.

18050774165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441.

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 18050774165 in words is "eighteen billion, fifty million, seven hundred seventy-four thousand, one hundred sixty-five".