13195081 has 4 divisors (see below), whose sum is σ = 13268164. Its totient is φ = 13122000.

The previous prime is 13195073. The next prime is 13195097. The reversal of 13195081 is 18059131.

13195081 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7241481 + 5953600 = 2691^2 + 2440^2 .

It is a 4-Lehmer number, since φ(13195081) divides (13195081-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 13195081 - 2³ = 13195073 is a prime.

It is a super-2 number, since 2×13195081² = 348220325193122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13195001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36270 + ... + 36631.

It is an arithmetic number, because the mean of its divisors is an integer number (3317041).

Almost surely, 2^13195081 is an apocalyptic number.

It is an amenable number.

13195081 is a deficient number, since it is larger than the sum of its proper divisors (73083).

13195081 is an equidigital number, since it uses as much as digits as its factorization.

13195081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73082.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 13195081 is about 3632.5034067431. The cubic root of 13195081 is about 236.3037898107.

It can be divided in two parts, 1319 and 5081, that added together give a square (6400 = 80²).

The spelling of 13195081 in words is "thirteen million, one hundred ninety-five thousand, eighty-one".