361109081 has 8 divisors (see below), whose sum is σ = 367331400. Its totient is φ = 354896640.

The previous prime is 361109071. The next prime is 361109113. The reversal of 361109081 is 180901163.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15335056 + 345774025 = 3916^2 + 18595^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361109081 is a prime.

It is a super-2 number, since 2×361109081² = 260799536761329122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361109071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137105 + ... + 139713.

It is an arithmetic number, because the mean of its divisors is an integer number (45916425).

Almost surely, 2^361109081 is an apocalyptic number.

It is an amenable number.

361109081 is a deficient number, since it is larger than the sum of its proper divisors (6222319).

361109081 is a wasteful number, since it uses less digits than its factorization.

361109081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4939.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 361109081 is about 19002.8703358203. The cubic root of 361109081 is about 712.1084458233.

The spelling of 361109081 in words is "three hundred sixty-one million, one hundred nine thousand, eighty-one".