18052765385 has 8 divisors (see below), whose sum is σ = 21788541000. Its totient is φ = 14358730624.

The previous prime is 18052765369. The next prime is 18052765387. The reversal of 18052765385 is 58356725081.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1789374601 + 16263390784 = 42301^2 + 127528^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18052765385 - 2⁴ = 18052765369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18052765387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10434260 + ... + 10435989.

It is an arithmetic number, because the mean of its divisors is an integer number (2723567625).

Almost surely, 2^18052765385 is an apocalyptic number.

It is an amenable number.

18052765385 is a deficient number, since it is larger than the sum of its proper divisors (3735775615).

18052765385 is a wasteful number, since it uses less digits than its factorization.

18052765385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20870427.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 18052765385 in words is "eighteen billion, fifty-two million, seven hundred sixty-five thousand, three hundred eighty-five".