159919 has 8 divisors (see below), whose sum is σ = 177120. Its totient is φ = 143616.

The previous prime is 159911. The next prime is 159931. The reversal of 159919 is 919951.

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

It is not a de Polignac number, because 159919 - 2³ = 159911 is a prime.

It is a super-2 number, since 2×159919² = 51148173122, which contains 22 as substring.

It is a Duffinian number.

159919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159911) 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, 187 + ... + 595.

It is an arithmetic number, because the mean of its divisors is an integer number (22140).

2¹⁵⁹⁹¹⁹ is an apocalyptic number.

159919 is a deficient number, since it is larger than the sum of its proper divisors (17201).

159919 is a wasteful number, since it uses less digits than its factorization.

159919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its digits is 3645, while the sum is 34.

The square root of 159919 is about 399.8987371823. The cubic root of 159919 is about 54.2791896261.

It can be divided in two parts, 1599 and 19, that multiplied together give a triangular number (30381 = T₂₄₆).

The spelling of 159919 in words is "one hundred fifty-nine thousand, nine hundred nineteen".