9381881 has 2 divisors, whose sum is σ = 9381882. Its totient is φ = 9381880.

The previous prime is 9381863. The next prime is 9381899. The reversal of 9381881 is 1881839.

It is a balanced prime because it is at equal distance from previous prime (9381863) and next prime (9381899).

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 1452025 = 2816^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 9381881 - 2⁶ = 9381817 is a prime.

It is a super-2 number, since 2×9381881² = 176039382196322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9381821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4690940 + 4690941.

It is an arithmetic number, because the mean of its divisors is an integer number (4690941).

Almost surely, 2^9381881 is an apocalyptic number.

It is an amenable number.

9381881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9381881 is an equidigital number, since it uses as much as digits as its factorization.

9381881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 38.

The square root of 9381881 is about 3062.9856349647. The cubic root of 9381881 is about 210.9097417996.

The spelling of 9381881 in words is "nine million, three hundred eighty-one thousand, eight hundred eighty-one".