159791633 has 8 divisors (see below), whose sum is σ = 160873128. Its totient is φ = 158713984.

The previous prime is 159791629. The next prime is 159791657. The reversal of 159791633 is 336197951.

It can be written as a sum of positive squares in 4 ways, for example, as 7441984 + 152349649 = 2728^2 + 12343^2 .

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 159791633 - 2² = 159791629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159791663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157235 + ... + 158247.

It is an arithmetic number, because the mean of its divisors is an integer number (20109141).

Almost surely, 2^159791633 is an apocalyptic number.

It is an amenable number.

159791633 is a deficient number, since it is larger than the sum of its proper divisors (1081495).

159791633 is a wasteful number, since it uses less digits than its factorization.

159791633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923.

The product of its digits is 153090, while the sum is 44.

The square root of 159791633 is about 12640.8715284983. The cubic root of 159791633 is about 542.6477563369.

The spelling of 159791633 in words is "one hundred fifty-nine million, seven hundred ninety-one thousand, six hundred thirty-three".