159621379 has 2 divisors, whose sum is σ = 159621380. Its totient is φ = 159621378.

The previous prime is 159621377. The next prime is 159621389. The reversal of 159621379 is 973126951.

It is a weak prime.

It is an emirp because it is prime and its reverse (973126951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159621379 - 2¹ = 159621377 is a prime.

Together with 159621377, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (159621377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79810689 + 79810690.

It is an arithmetic number, because the mean of its divisors is an integer number (79810690).

Almost surely, 2^159621379 is an apocalyptic number.

159621379 is a deficient number, since it is larger than the sum of its proper divisors (1).

159621379 is an equidigital number, since it uses as much as digits as its factorization.

159621379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 43.

The square root of 159621379 is about 12634.1354670591. The cubic root of 159621379 is about 542.4549619643.

It can be divided in two parts, 159621 and 379, that added together give a 4-th power (160000 = 20⁴).

The spelling of 159621379 in words is "one hundred fifty-nine million, six hundred twenty-one thousand, three hundred seventy-nine".