12965181 has 8 divisors (see below), whose sum is σ = 17495520. Its totient is φ = 8539152.

The previous prime is 12965177. The next prime is 12965189. The reversal of 12965181 is 18156921.

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

It is not a de Polignac number, because 12965181 - 2² = 12965177 is a prime.

It is a super-2 number, since 2×12965181² = 336191836725522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12965189) 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, 25786 + ... + 26283.

It is an arithmetic number, because the mean of its divisors is an integer number (2186940).

Almost surely, 2^12965181 is an apocalyptic number.

It is an amenable number.

12965181 is a deficient number, since it is larger than the sum of its proper divisors (4530339).

12965181 is an equidigital number, since it uses as much as digits as its factorization.

12965181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52155.

The product of its digits is 4320, while the sum is 33.

The square root of 12965181 is about 3600.7195114310. The cubic root of 12965181 is about 234.9233551168.

The spelling of 12965181 in words is "twelve million, nine hundred sixty-five thousand, one hundred eighty-one".