159091919 has 8 divisors (see below), whose sum is σ = 183040800. Its totient is φ = 135448416.

The previous prime is 159091913. The next prime is 159091951. The reversal of 159091919 is 919190951.

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

It is a cyclic number.

It is not a de Polignac number, because 159091919 - 2¹⁶ = 159026383 is a prime.

It is a super-3 number, since 3×159091919³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159091919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159091913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75224 + ... + 77309.

It is an arithmetic number, because the mean of its divisors is an integer number (22880100).

Almost surely, 2^159091919 is an apocalyptic number.

159091919 is a deficient number, since it is larger than the sum of its proper divisors (23948881).

159091919 is a wasteful number, since it uses less digits than its factorization.

159091919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152689.

The product of its (nonzero) digits is 32805, while the sum is 44.

The square root of 159091919 is about 12613.1645117314. The cubic root of 159091919 is about 541.8545278902.

The spelling of 159091919 in words is "one hundred fifty-nine million, ninety-one thousand, nine hundred nineteen".