10983781 has 2 divisors, whose sum is σ = 10983782. Its totient is φ = 10983780.

The previous prime is 10983761. The next prime is 10983803. The reversal of 10983781 is 18738901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8208225 + 2775556 = 2865^2 + 1666^2 .

It is a cyclic number.

It is not a de Polignac number, because 10983781 - 2²¹ = 8886629 is a prime.

It is a super-2 number, since 2×10983781² = 241286890111922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10983781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10983761) 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 as a sum of consecutive naturals, namely, 5491890 + 5491891.

It is an arithmetic number, because the mean of its divisors is an integer number (5491891).

Almost surely, 2^10983781 is an apocalyptic number.

It is an amenable number.

10983781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10983781 is an equidigital number, since it uses as much as digits as its factorization.

10983781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 10983781 is about 3314.1787821420. The cubic root of 10983781 is about 222.2886500392.

The spelling of 10983781 in words is "ten million, nine hundred eighty-three thousand, seven hundred eighty-one".