159723853 has 2 divisors, whose sum is σ = 159723854. Its totient is φ = 159723852.

The previous prime is 159723841. The next prime is 159723881. The reversal of 159723853 is 358327951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158080329 + 1643524 = 12573^2 + 1282^2 .

It is an emirp because it is prime and its reverse (358327951) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159723853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159723833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79861926 + 79861927.

It is an arithmetic number, because the mean of its divisors is an integer number (79861927).

Almost surely, 2^159723853 is an apocalyptic number.

It is an amenable number.

159723853 is a deficient number, since it is larger than the sum of its proper divisors (1).

159723853 is an equidigital number, since it uses as much as digits as its factorization.

159723853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 43.

The square root of 159723853 is about 12638.1902581026. The cubic root of 159723853 is about 542.5710191804.

It can be divided in two parts, 15972385 and 3, that multiplied together give a triangular number (47917155 = T₉₇₈₉).

The spelling of 159723853 in words is "one hundred fifty-nine million, seven hundred twenty-three thousand, eight hundred fifty-three".