13001806 has 4 divisors (see below), whose sum is σ = 19502712. Its totient is φ = 6500902.

The previous prime is 13001789. The next prime is 13001827. The reversal of 13001806 is 60810031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60810031 = 2423 ⋅25097.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250450 + ... + 3250453.

It is an arithmetic number, because the mean of its divisors is an integer number (4875678).

Almost surely, 2^13001806 is an apocalyptic number.

13001806 is a deficient number, since it is larger than the sum of its proper divisors (6500906).

13001806 is an equidigital number, since it uses as much as digits as its factorization.

13001806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500905.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 13001806 is about 3605.8017139050. The cubic root of 13001806 is about 235.1443567562.

Adding to 13001806 its reverse (60810031), we get a palindrome (73811837).

The spelling of 13001806 in words is "thirteen million, one thousand, eight hundred six".