159821413 has 2 divisors, whose sum is σ = 159821414. Its totient is φ = 159821412.

The previous prime is 159821381. The next prime is 159821443. The reversal of 159821413 is 314128951.

159821413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156200004 + 3621409 = 12498^2 + 1903^2 .

It is a cyclic number.

It is not a de Polignac number, because 159821413 - 2⁵ = 159821381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159821443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79910706 + 79910707.

It is an arithmetic number, because the mean of its divisors is an integer number (79910707).

Almost surely, 2^159821413 is an apocalyptic number.

It is an amenable number.

159821413 is a deficient number, since it is larger than the sum of its proper divisors (1).

159821413 is an equidigital number, since it uses as much as digits as its factorization.

159821413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 34.

The square root of 159821413 is about 12642.0493987328. The cubic root of 159821413 is about 542.6814649154.

The spelling of 159821413 in words is "one hundred fifty-nine million, eight hundred twenty-one thousand, four hundred thirteen".