206148881 has 2 divisors, whose sum is σ = 206148882. Its totient is φ = 206148880.

The previous prime is 206148869. The next prime is 206148893. The reversal of 206148881 is 188841602.

It is a balanced prime because it is at equal distance from previous prime (206148869) and next prime (206148893).

It can be written as a sum of positive squares in only one way, i.e., 132618256 + 73530625 = 11516^2 + 8575^2 .

It is a cyclic number.

It is not a de Polignac number, because 206148881 - 2¹⁰ = 206147857 is a prime.

It is a super-2 number, since 2×206148881² = 84994722275104322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206148821) 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, 103074440 + 103074441.

It is an arithmetic number, because the mean of its divisors is an integer number (103074441).

Almost surely, 2^206148881 is an apocalyptic number.

It is an amenable number.

206148881 is a deficient number, since it is larger than the sum of its proper divisors (1).

206148881 is an equidigital number, since it uses as much as digits as its factorization.

206148881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 206148881 is about 14357.8856730370. The cubic root of 206148881 is about 590.7363027960.

The spelling of 206148881 in words is "two hundred six million, one hundred forty-eight thousand, eight hundred eighty-one".