11583936018 has 12 divisors (see below), whose sum is σ = 25098528078. Its totient is φ = 3861312000.

The previous prime is 11583936011. The next prime is 11583936019. The reversal of 11583936018 is 81063938511.

It is a happy number.

11583936018 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 39 + 3 + 601 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9429769449 + 2154166569 = 97107^2 + 46413^2 .

It is not an unprimeable number, because it can be changed into a prime (11583936011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321775983 + ... + 321776018.

Almost surely, 2^11583936018 is an apocalyptic number.

11583936018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11583936018 is an abundant number, since it is smaller than the sum of its proper divisors (13514592060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11583936018 is a wasteful number, since it uses less digits than its factorization.

11583936018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643552009 (or 643552006 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11583936018 in words is "eleven billion, five hundred eighty-three million, nine hundred thirty-six thousand, eighteen".