159121838 has 8 divisors (see below), whose sum is σ = 239591088. Its totient is φ = 79258144.

The previous prime is 159121813. The next prime is 159121849. The reversal of 159121838 is 838121951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150731 + ... + 151782.

It is an arithmetic number, because the mean of its divisors is an integer number (29948886).

Almost surely, 2^159121838 is an apocalyptic number.

159121838 is a deficient number, since it is larger than the sum of its proper divisors (80469250).

159121838 is a wasteful number, since it uses less digits than its factorization.

159121838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302778.

The product of its digits is 17280, while the sum is 38.

The square root of 159121838 is about 12614.3504787207. The cubic root of 159121838 is about 541.8884930125. Note that the first 3 decimals are identical.

The spelling of 159121838 in words is "one hundred fifty-nine million, one hundred twenty-one thousand, eight hundred thirty-eight".