201092681 has 2 divisors, whose sum is σ = 201092682. Its totient is φ = 201092680.

The previous prime is 201092663. The next prime is 201092687. The reversal of 201092681 is 186290102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156750400 + 44342281 = 12520^2 + 6659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201092681 is a prime.

It is a super-2 number, since 2×201092681² = 80876532703535522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (201092687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100546340 + 100546341.

It is an arithmetic number, because the mean of its divisors is an integer number (100546341).

Almost surely, 2^201092681 is an apocalyptic number.

It is an amenable number.

201092681 is a deficient number, since it is larger than the sum of its proper divisors (1).

201092681 is an equidigital number, since it uses as much as digits as its factorization.

201092681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 201092681 is about 14180.7151089076. The cubic root of 201092681 is about 585.8666201968.

The spelling of 201092681 in words is "two hundred one million, ninety-two thousand, six hundred eighty-one".