159109943 has 2 divisors, whose sum is σ = 159109944. Its totient is φ = 159109942.

The previous prime is 159109939. The next prime is 159109957. The reversal of 159109943 is 349901951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159109943 - 2² = 159109939 is a prime.

It is a super-2 number, since 2×159109943² = 50631947922926498, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159109943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159109913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79554971 + 79554972.

It is an arithmetic number, because the mean of its divisors is an integer number (79554972).

Almost surely, 2^159109943 is an apocalyptic number.

159109943 is a deficient number, since it is larger than the sum of its proper divisors (1).

159109943 is an equidigital number, since it uses as much as digits as its factorization.

159109943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 159109943 is about 12613.8789830884. The cubic root of 159109943 is about 541.8749898917.

The spelling of 159109943 in words is "one hundred fifty-nine million, one hundred nine thousand, nine hundred forty-three".