13530434018 has 16 divisors (see below), whose sum is σ = 20439675000. Its totient is φ = 6717244032.

The previous prime is 13530434017. The next prime is 13530434063. The reversal of 13530434018 is 81043403531.

It can be written as a sum of positive squares in 4 ways, for example, as 12250726489 + 1279707529 = 110683^2 + 35773^2 .

It is not an unprimeable number, because it can be changed into a prime (13530434017) 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, 949208 + ... + 963356.

Almost surely, 2^13530434018 is an apocalyptic number.

13530434018 is a deficient number, since it is larger than the sum of its proper divisors (6909240982).

13530434018 is a wasteful number, since it uses less digits than its factorization.

13530434018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17509.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 13530434018 its reverse (81043403531), we get a palindrome (94573837549).

The spelling of 13530434018 in words is "thirteen billion, five hundred thirty million, four hundred thirty-four thousand, eighteen".