159748917 has 8 divisors (see below), whose sum is σ = 213556224. Its totient is φ = 106220448.

The previous prime is 159748909. The next prime is 159748933. The reversal of 159748917 is 719847951.

It is a happy number.

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

It is not a de Polignac number, because 159748917 - 2³ = 159748909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159748917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159748957) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 68368 + ... + 70665.

It is an arithmetic number, because the mean of its divisors is an integer number (26694528).

Almost surely, 2^159748917 is an apocalyptic number.

It is an amenable number.

159748917 is a deficient number, since it is larger than the sum of its proper divisors (53807307).

159748917 is a wasteful number, since it uses less digits than its factorization.

159748917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139419.

The product of its digits is 635040, while the sum is 51.

The square root of 159748917 is about 12639.1818168741. The cubic root of 159748917 is about 542.5993979281.

The spelling of 159748917 in words is "one hundred fifty-nine million, seven hundred forty-eight thousand, nine hundred seventeen".