159745831 has 6 divisors (see below), whose sum is σ = 185826840. Its totient is φ = 136924956.

The previous prime is 159745793. The next prime is 159745849. The reversal of 159745831 is 138547951.

It is not a de Polignac number, because 159745831 - 2⁹ = 159745319 is a prime.

It is a super-2 number, since 2×159745831² = 51037461043761122, 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 (159745871) 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 5 ways as a sum of consecutive naturals, for example, 1630011 + ... + 1630108.

It is an arithmetic number, because the mean of its divisors is an integer number (30971140).

Almost surely, 2^159745831 is an apocalyptic number.

159745831 is a deficient number, since it is larger than the sum of its proper divisors (26081009).

159745831 is an equidigital number, since it uses as much as digits as its factorization.

159745831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260133 (or 3260126 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 159745831 is about 12639.0597355974. The cubic root of 159745831 is about 542.5959039607.

The spelling of 159745831 in words is "one hundred fifty-nine million, seven hundred forty-five thousand, eight hundred thirty-one".