13065181 has 8 divisors (see below), whose sum is σ = 13478144. Its totient is φ = 12655440.

The previous prime is 13065149. The next prime is 13065187. The reversal of 13065181 is 18156031.

13065181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13065181 - 2⁵ = 13065149 is a prime.

It is a super-2 number, since 2×13065181² = 341397909125522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13065187) 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, 9376 + ... + 10678.

It is an arithmetic number, because the mean of its divisors is an integer number (1684768).

Almost surely, 2^13065181 is an apocalyptic number.

It is an amenable number.

13065181 is a deficient number, since it is larger than the sum of its proper divisors (412963).

13065181 is a wasteful number, since it uses less digits than its factorization.

13065181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 13065181 is about 3614.5789519666. The cubic root of 13065181 is about 235.5257941794.

The spelling of 13065181 in words is "thirteen million, sixty-five thousand, one hundred eighty-one".