13081838 has 16 divisors (see below), whose sum is σ = 24465024. Its totient is φ = 5096760.

The previous prime is 13081807. The next prime is 13081841. The reversal of 13081838 is 83818031.

It is a super-2 number, since 2×13081838² = 342268970916488, which contains 22 as substring.

It is a zygodrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42320 + ... + 42627.

It is an arithmetic number, because the mean of its divisors is an integer number (1529064).

Almost surely, 2^13081838 is an apocalyptic number.

13081838 is a deficient number, since it is larger than the sum of its proper divisors (11383186).

13081838 is a wasteful number, since it uses less digits than its factorization.

13081838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84967.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 13081838 is about 3616.8823591596. The cubic root of 13081838 is about 235.6258434913.

Adding to 13081838 its reverse (83818031), we get a palindrome (96899869).

The spelling of 13081838 in words is "thirteen million, eighty-one thousand, eight hundred thirty-eight".