13432018 has 4 divisors (see below), whose sum is σ = 20148030. Its totient is φ = 6716008.

The previous prime is 13432009. The next prime is 13432019. The reversal of 13432018 is 81023431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8779369 + 4652649 = 2963^2 + 2157^2 .

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 13432018.

It is not an unprimeable number, because it can be changed into a prime (13432019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3358003 + ... + 3358006.

Almost surely, 2^13432018 is an apocalyptic number.

13432018 is a deficient number, since it is larger than the sum of its proper divisors (6716012).

13432018 is an equidigital number, since it uses as much as digits as its factorization.

13432018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6716011.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 13432018 is about 3664.9717597821. The cubic root of 13432018 is about 237.7098009473.

Adding to 13432018 its reverse (81023431), we get a palindrome (94455449).

The spelling of 13432018 in words is "thirteen million, four hundred thirty-two thousand, eighteen".