159388243 has 16 divisors (see below), whose sum is σ = 195761664. Its totient is φ = 126656640.

The previous prime is 159388237. The next prime is 159388247. The reversal of 159388243 is 342883951.

It is a cyclic number.

It is not a de Polignac number, because 159388243 - 2⁵ = 159388211 is a prime.

It is a super-2 number, since 2×159388243² = 50809224013254098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 159388243.

It is not an unprimeable number, because it can be changed into a prime (159388247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2023 + ... + 17968.

It is an arithmetic number, because the mean of its divisors is an integer number (12235104).

Almost surely, 2^159388243 is an apocalyptic number.

159388243 is a deficient number, since it is larger than the sum of its proper divisors (36373421).

159388243 is a wasteful number, since it uses less digits than its factorization.

159388243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20082.

The product of its digits is 207360, while the sum is 43.

The square root of 159388243 is about 12624.9056630139. The cubic root of 159388243 is about 542.1907379593.

The spelling of 159388243 in words is "one hundred fifty-nine million, three hundred eighty-eight thousand, two hundred forty-three".