133810841 has 2 divisors, whose sum is σ = 133810842. Its totient is φ = 133810840.

The previous prime is 133810823. The next prime is 133810889. The reversal of 133810841 is 148018331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133633600 + 177241 = 11560^2 + 421^2 .

It is an emirp because it is prime and its reverse (148018331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133810841 - 2¹⁸ = 133548697 is a prime.

It is not a weakly prime, because it can be changed into another prime (133810811) 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, 66905420 + 66905421.

It is an arithmetic number, because the mean of its divisors is an integer number (66905421).

Almost surely, 2^133810841 is an apocalyptic number.

It is an amenable number.

133810841 is a deficient number, since it is larger than the sum of its proper divisors (1).

133810841 is an equidigital number, since it uses as much as digits as its factorization.

133810841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 133810841 is about 11567.6635929647. The cubic root of 133810841 is about 511.4820927185.

The spelling of 133810841 in words is "one hundred thirty-three million, eight hundred ten thousand, eight hundred forty-one".