159811133 has 2 divisors, whose sum is σ = 159811134. Its totient is φ = 159811132.

The previous prime is 159811121. The next prime is 159811187. The reversal of 159811133 is 331118951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96098809 + 63712324 = 9803^2 + 7982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159811133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159811133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159811193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79905566 + 79905567.

It is an arithmetic number, because the mean of its divisors is an integer number (79905567).

Almost surely, 2^159811133 is an apocalyptic number.

It is an amenable number.

159811133 is a deficient number, since it is larger than the sum of its proper divisors (1).

159811133 is an equidigital number, since it uses as much as digits as its factorization.

159811133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 32.

The square root of 159811133 is about 12641.6428125462. The cubic root of 159811133 is about 542.6698292508.

The spelling of 159811133 in words is "one hundred fifty-nine million, eight hundred eleven thousand, one hundred thirty-three".