9180881 has 2 divisors, whose sum is σ = 9180882. Its totient is φ = 9180880.

The previous prime is 9180859. The next prime is 9180883. The reversal of 9180881 is 1880819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8526400 + 654481 = 2920^2 + 809^2 .

It is an emirp because it is prime and its reverse (1880819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9180881 - 2¹⁰ = 9179857 is a prime.

It is a super-2 number, since 2×9180881² = 168577151872322, which contains 22 as substring.

Together with 9180883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9180883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4590440 + 4590441.

It is an arithmetic number, because the mean of its divisors is an integer number (4590441).

Almost surely, 2^9180881 is an apocalyptic number.

It is an amenable number.

9180881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9180881 is an equidigital number, since it uses as much as digits as its factorization.

9180881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 9180881 is about 3029.9968646848. The cubic root of 9180881 is about 209.3926594149.

The spelling of 9180881 in words is "nine million, one hundred eighty thousand, eight hundred eighty-one".