18352053337 has 4 divisors (see below), whose sum is σ = 18799664436. Its totient is φ = 17904442240.

The previous prime is 18352053311. The next prime is 18352053341. The reversal of 18352053337 is 73335025381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73335025381 = 37 ⋅1982027713.

It can be written as a sum of positive squares in 2 ways, for example, as 3001834521 + 15350218816 = 54789^2 + 123896^2 .

It is a cyclic number.

It is not a de Polignac number, because 18352053337 - 2²⁷ = 18217835609 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18352053337.

It is not an unprimeable number, because it can be changed into a prime (18352053397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223805488 + ... + 223805569.

It is an arithmetic number, because the mean of its divisors is an integer number (4699916109).

Almost surely, 2^18352053337 is an apocalyptic number.

It is an amenable number.

18352053337 is a deficient number, since it is larger than the sum of its proper divisors (447611099).

18352053337 is an equidigital number, since it uses as much as digits as its factorization.

18352053337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447611098.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 18352053337 in words is "eighteen billion, three hundred fifty-two million, fifty-three thousand, three hundred thirty-seven".