159139919 has 4 divisors (see below), whose sum is σ = 159178800. Its totient is φ = 159101040.

The previous prime is 159139909. The next prime is 159139931. The reversal of 159139919 is 919931951.

159139919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919931951 = 941 ⋅977611.

It is a cyclic number.

It is not a de Polignac number, because 159139919 - 2⁸ = 159139663 is a prime.

It is a super-2 number, since 2×159139919² = 50651027638653122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159139909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12467 + ... + 21764.

It is an arithmetic number, because the mean of its divisors is an integer number (39794700).

Almost surely, 2^159139919 is an apocalyptic number.

159139919 is a deficient number, since it is larger than the sum of its proper divisors (38881).

159139919 is an equidigital number, since it uses as much as digits as its factorization.

159139919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38880.

The product of its digits is 98415, while the sum is 47.

The square root of 159139919 is about 12615.0671421122. The cubic root of 159139919 is about 541.9090171486.

The spelling of 159139919 in words is "one hundred fifty-nine million, one hundred thirty-nine thousand, nine hundred nineteen".