2940083981 has 2 divisors, whose sum is σ = 2940083982. Its totient is φ = 2940083980.

The previous prime is 2940083969. The next prime is 2940084001. The reversal of 2940083981 is 1893800492.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2607021481 + 333062500 = 51059^2 + 18250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2940083981 - 2¹⁸ = 2939821837 is a prime.

It is a super-2 number, since 2×2940083981² = 17288187630665616722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2940023981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1470041990 + 1470041991.

It is an arithmetic number, because the mean of its divisors is an integer number (1470041991).

Almost surely, 2^2940083981 is an apocalyptic number.

It is an amenable number.

2940083981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2940083981 is an equidigital number, since it uses as much as digits as its factorization.

2940083981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 2940083981 is about 54222.5412628364. The cubic root of 2940083981 is about 1432.5833916369.

The spelling of 2940083981 in words is "two billion, nine hundred forty million, eighty-three thousand, nine hundred eighty-one".