159731745 has 24 divisors (see below), whose sum is σ = 271496064. Its totient is φ = 80176896.

The previous prime is 159731731. The next prime is 159731749. The reversal of 159731745 is 547137951.

It is not a de Polignac number, because 159731745 - 2⁴ = 159731729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 159731697 and 159731706.

It is not an unprimeable number, because it can be changed into a prime (159731749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14089 + ... + 22758.

It is an arithmetic number, because the mean of its divisors is an integer number (11312336).

Almost surely, 2^159731745 is an apocalyptic number.

159731745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159731745 is a deficient number, since it is larger than the sum of its proper divisors (111764319).

159731745 is a wasteful number, since it uses less digits than its factorization.

159731745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36889 (or 36872 counting only the distinct ones).

The product of its digits is 132300, while the sum is 42.

The square root of 159731745 is about 12638.5024824937. The cubic root of 159731745 is about 542.5799552282.

The spelling of 159731745 in words is "one hundred fifty-nine million, seven hundred thirty-one thousand, seven hundred forty-five".