2081969 has 2 divisors, whose sum is σ = 2081970. Its totient is φ = 2081968.

The previous prime is 2081927. The next prime is 2082019. The reversal of 2081969 is 9691802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 506944 = 1255^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081969 - 2²⁰ = 1033393 is a prime.

It is a super-2 number, since 2×2081969² = 8669189833922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2081909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040984 + 1040985.

It is an arithmetic number, because the mean of its divisors is an integer number (1040985).

2^2081969 is an apocalyptic number.

It is an amenable number.

2081969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081969 is an equidigital number, since it uses as much as digits as its factorization.

2081969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2081969 is about 1442.9029766412. The cubic root of 2081969 is about 127.6903526040.

The spelling of 2081969 in words is "two million, eighty-one thousand, nine hundred sixty-nine".