159874973 has 2 divisors, whose sum is σ = 159874974. Its totient is φ = 159874972.

The previous prime is 159874963. The next prime is 159874997. The reversal of 159874973 is 379478951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100861849 + 59013124 = 10043^2 + 7682^2 .

It is an emirp because it is prime and its reverse (379478951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159874973 - 2¹² = 159870877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159874933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79937486 + 79937487.

It is an arithmetic number, because the mean of its divisors is an integer number (79937487).

Almost surely, 2^159874973 is an apocalyptic number.

It is an amenable number.

159874973 is a deficient number, since it is larger than the sum of its proper divisors (1).

159874973 is an equidigital number, since it uses as much as digits as its factorization.

159874973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 159874973 is about 12644.1675487159. The cubic root of 159874973 is about 542.7420800157.

The spelling of 159874973 in words is "one hundred fifty-nine million, eight hundred seventy-four thousand, nine hundred seventy-three".