1083807316981 has 2 divisors, whose sum is σ = 1083807316982. Its totient is φ = 1083807316980.

The previous prime is 1083807316931. The next prime is 1083807316993. The reversal of 1083807316981 is 1896137083801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083743460900 + 63856081 = 1041030^2 + 7991^2 .

It is an emirp because it is prime and its reverse (1896137083801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1083807316981 - 2⁷ = 1083807316853 is a prime.

It is a super-2 number, since 2×1083807316981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1083807316931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541903658490 + 541903658491.

It is an arithmetic number, because the mean of its divisors is an integer number (541903658491).

Almost surely, 2^{1083807316981} is an apocalyptic number.

It is an amenable number.

1083807316981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1083807316981 is an equidigital number, since it uses as much as digits as its factorization.

1083807316981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 1083807316981 in words is "one trillion, eighty-three billion, eight hundred seven million, three hundred sixteen thousand, nine hundred eighty-one".