18245638611 has 32 divisors (see below), whose sum is σ = 29114976000. Its totient is φ = 11255557824.

The previous prime is 18245638591. The next prime is 18245638633. The reversal of 18245638611 is 11683654281.

18245638611 is a `hidden beast` number, since 1 + 8 + 2 + 4 + 5 + 638 + 6 + 1 + 1 = 666.

It is not a de Polignac number, because 18245638611 - 2¹³ = 18245630419 is a prime.

It is a super-3 number, since 3×18245638611³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18245638661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391506 + ... + 435623.

It is an arithmetic number, because the mean of its divisors is an integer number (909843000).

Almost surely, 2^18245638611 is an apocalyptic number.

18245638611 is a deficient number, since it is larger than the sum of its proper divisors (10869337389).

18245638611 is a wasteful number, since it uses less digits than its factorization.

18245638611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827200 (or 827194 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The spelling of 18245638611 in words is "eighteen billion, two hundred forty-five million, six hundred thirty-eight thousand, six hundred eleven".