9181361 has 4 divisors (see below), whose sum is σ = 10492992. Its totient is φ = 7869732.

The previous prime is 9181357. The next prime is 9181379. The reversal of 9181361 is 1631819.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1631819 = 7 ⋅233117.

It is a cyclic number.

It is not a de Polignac number, because 9181361 - 2² = 9181357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9181321) 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, 655805 + ... + 655818.

It is an arithmetic number, because the mean of its divisors is an integer number (2623248).

Almost surely, 2^9181361 is an apocalyptic number.

It is an amenable number.

9181361 is a deficient number, since it is larger than the sum of its proper divisors (1311631).

9181361 is a wasteful number, since it uses less digits than its factorization.

9181361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311630.

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

The square root of 9181361 is about 3030.0760716523. The cubic root of 9181361 is about 209.3963085464.

The spelling of 9181361 in words is "nine million, one hundred eighty-one thousand, three hundred sixty-one".