160239991 has 2 divisors, whose sum is σ = 160239992. Its totient is φ = 160239990.

The previous prime is 160239979. The next prime is 160240027. The reversal of 160239991 is 199932061.

160239991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 160239991 - 2⁹ = 160239479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160239491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80119995 + 80119996.

It is an arithmetic number, because the mean of its divisors is an integer number (80119996).

Almost surely, 2^160239991 is an apocalyptic number.

160239991 is a deficient number, since it is larger than the sum of its proper divisors (1).

160239991 is an equidigital number, since it uses as much as digits as its factorization.

160239991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 160239991 is about 12658.5935632676. The cubic root of 160239991 is about 543.1548193038.

The spelling of 160239991 in words is "one hundred sixty million, two hundred thirty-nine thousand, nine hundred ninety-one".