159338891 has 2 divisors, whose sum is σ = 159338892. Its totient is φ = 159338890.

The previous prime is 159338869. The next prime is 159338939. The reversal of 159338891 is 198833951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159338891 - 2⁶ = 159338827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (159338821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79669445 + 79669446.

It is an arithmetic number, because the mean of its divisors is an integer number (79669446).

Almost surely, 2^159338891 is an apocalyptic number.

159338891 is a deficient number, since it is larger than the sum of its proper divisors (1).

159338891 is an equidigital number, since it uses as much as digits as its factorization.

159338891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 47.

The square root of 159338891 is about 12622.9509624335. The cubic root of 159338891 is about 542.1347719754.

The spelling of 159338891 in words is "one hundred fifty-nine million, three hundred thirty-eight thousand, eight hundred ninety-one".