2083981 has 2 divisors, whose sum is σ = 2083982. Its totient is φ = 2083980.

The previous prime is 2083973. The next prime is 2084003. The reversal of 2083981 is 1893802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1334025 + 749956 = 1155^2 + 866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2083981 - 2³ = 2083973 is a prime.

It is a super-2 number, since 2×2083981² = 8685953616722, which contains 22 as substring.

2083981 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2083681) 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, 1041990 + 1041991.

It is an arithmetic number, because the mean of its divisors is an integer number (1041991).

2^2083981 is an apocalyptic number.

It is an amenable number.

2083981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2083981 is an equidigital number, since it uses as much as digits as its factorization.

2083981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 2083981 is about 1443.6000138543. The cubic root of 2083981 is about 127.7314723763.

The spelling of 2083981 in words is "two million, eighty-three thousand, nine hundred eighty-one".