18382257853 has 4 divisors (see below), whose sum is σ = 18564260508. Its totient is φ = 18200255200.

The previous prime is 18382257821. The next prime is 18382257877. The reversal of 18382257853 is 35875228381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35875228381 = 101 ⋅355200281.

It can be written as a sum of positive squares in 2 ways, for example, as 14062876569 + 4319381284 = 118587^2 + 65722^2 .

It is a cyclic number.

It is not a de Polignac number, because 18382257853 - 2⁵ = 18382257821 is a prime.

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 18382257853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18382257893) 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, 91001176 + ... + 91001377.

It is an arithmetic number, because the mean of its divisors is an integer number (4641065127).

Almost surely, 2^18382257853 is an apocalyptic number.

It is an amenable number.

18382257853 is a deficient number, since it is larger than the sum of its proper divisors (182002655).

18382257853 is a wasteful number, since it uses less digits than its factorization.

18382257853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182002654.

The product of its digits is 3225600, while the sum is 52.

The spelling of 18382257853 in words is "eighteen billion, three hundred eighty-two million, two hundred fifty-seven thousand, eight hundred fifty-three".