159733897 has 2 divisors, whose sum is σ = 159733898. Its totient is φ = 159733896.

The previous prime is 159733867. The next prime is 159733901. The reversal of 159733897 is 798337951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152176896 + 7557001 = 12336^2 + 2749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159733897 is a prime.

It is not a weakly prime, because it can be changed into another prime (159733837) 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, 79866948 + 79866949.

It is an arithmetic number, because the mean of its divisors is an integer number (79866949).

Almost surely, 2^159733897 is an apocalyptic number.

It is an amenable number.

159733897 is a deficient number, since it is larger than the sum of its proper divisors (1).

159733897 is an equidigital number, since it uses as much as digits as its factorization.

159733897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 52.

The square root of 159733897 is about 12638.5876188758. The cubic root of 159733897 is about 542.5823918693.

The spelling of 159733897 in words is "one hundred fifty-nine million, seven hundred thirty-three thousand, eight hundred ninety-seven".