159126381 has 12 divisors (see below), whose sum is σ = 236061852. Its totient is φ = 103216896.

The previous prime is 159126361. The next prime is 159126403. The reversal of 159126381 is 183621951.

159126381 is a `hidden beast` number, since 1 + 5 + 9 + 12 + 638 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 149670756 + 9455625 = 12234^2 + 3075^2 .

It is not a de Polignac number, because 159126381 - 2²² = 154932077 is a prime.

It is a super-2 number, since 2×159126381² = 50642410260314322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159126361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238596 + ... + 239261.

It is an arithmetic number, because the mean of its divisors is an integer number (19671821).

Almost surely, 2^159126381 is an apocalyptic number.

It is an amenable number.

159126381 is a deficient number, since it is larger than the sum of its proper divisors (76935471).

159126381 is a wasteful number, since it uses less digits than its factorization.

159126381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477900 (or 477897 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 159126381 is about 12614.5305501235. The cubic root of 159126381 is about 541.8936500168.

It can be divided in two parts, 1591 and 26381, that added together give a palindrome (27972).

The spelling of 159126381 in words is "one hundred fifty-nine million, one hundred twenty-six thousand, three hundred eighty-one".