1695056981 has 2 divisors, whose sum is σ = 1695056982. Its totient is φ = 1695056980.

The previous prime is 1695056953. The next prime is 1695056983. The reversal of 1695056981 is 1896505961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019524900 + 675532081 = 31930^2 + 25991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1695056981 - 2⁶ = 1695056917 is a prime.

It is a super-2 number, since 2×1695056981² = 5746436337673668722, which contains 22 as substring.

Together with 1695056983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1695056983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847528490 + 847528491.

It is an arithmetic number, because the mean of its divisors is an integer number (847528491).

Almost surely, 2^1695056981 is an apocalyptic number.

It is an amenable number.

1695056981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1695056981 is an equidigital number, since it uses as much as digits as its factorization.

1695056981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 50.

The square root of 1695056981 is about 41171.0697092024. The cubic root of 1695056981 is about 1192.3253218938.

The spelling of 1695056981 in words is "one billion, six hundred ninety-five million, fifty-six thousand, nine hundred eighty-one".