159138291 has 8 divisors (see below), whose sum is σ = 228506320. Its totient is φ = 97931232.

The previous prime is 159138289. The next prime is 159138323. The reversal of 159138291 is 192831951.

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

It is not a de Polignac number, because 159138291 - 2¹ = 159138289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 4080469 = 159138291 / (1 + 5 + 9 + 1 + 3 + 8 + 2 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159133291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2040196 + ... + 2040273.

It is an arithmetic number, because the mean of its divisors is an integer number (28563290).

Almost surely, 2^159138291 is an apocalyptic number.

159138291 is a deficient number, since it is larger than the sum of its proper divisors (69368029).

159138291 is a wasteful number, since it uses less digits than its factorization.

159138291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080485.

The product of its digits is 19440, while the sum is 39.

The square root of 159138291 is about 12615.0026159331. The cubic root of 159138291 is about 541.9071692341.

The spelling of 159138291 in words is "one hundred fifty-nine million, one hundred thirty-eight thousand, two hundred ninety-one".