159067991 has 2 divisors, whose sum is σ = 159067992. Its totient is φ = 159067990.

The previous prime is 159067973. The next prime is 159068011. The reversal of 159067991 is 199760951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159067991 - 2⁶ = 159067927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159067901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79533995 + 79533996.

It is an arithmetic number, because the mean of its divisors is an integer number (79533996).

Almost surely, 2^159067991 is an apocalyptic number.

159067991 is a deficient number, since it is larger than the sum of its proper divisors (1).

159067991 is an equidigital number, since it uses as much as digits as its factorization.

159067991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 47.

The square root of 159067991 is about 12612.2159432829. The cubic root of 159067991 is about 541.8273609013.

The spelling of 159067991 in words is "one hundred fifty-nine million, sixty-seven thousand, nine hundred ninety-one".