159290381 has 2 divisors, whose sum is σ = 159290382. Its totient is φ = 159290380.

The previous prime is 159290309. The next prime is 159290401. The reversal of 159290381 is 183092951.

159290381 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., 97022500 + 62267881 = 9850^2 + 7891^2 .

It is an emirp because it is prime and its reverse (183092951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159290381 - 2¹⁰ = 159289357 is a prime.

It is a super-2 number, since 2×159290381² = 50746850958250322, which contains 22 as substring.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79645190 + 79645191.

It is an arithmetic number, because the mean of its divisors is an integer number (79645191).

Almost surely, 2^159290381 is an apocalyptic number.

It is an amenable number.

159290381 is a deficient number, since it is larger than the sum of its proper divisors (1).

159290381 is an equidigital number, since it uses as much as digits as its factorization.

159290381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 159290381 is about 12621.0293161850. The cubic root of 159290381 is about 542.0797495701.

The spelling of 159290381 in words is "one hundred fifty-nine million, two hundred ninety thousand, three hundred eighty-one".