159784745 has 8 divisors (see below), whose sum is σ = 191948616. Its totient is φ = 127689856.

The previous prime is 159784741. The next prime is 159784747. The reversal of 159784745 is 547487951.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28430224 + 131354521 = 5332^2 + 11461^2 .

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 159784745 - 2² = 159784741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 159784693 and 159784702.

It is not an unprimeable number, because it can be changed into a prime (159784741) 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, 12002 + ... + 21531.

It is an arithmetic number, because the mean of its divisors is an integer number (23993577).

Almost surely, 2^159784745 is an apocalyptic number.

It is an amenable number.

159784745 is a deficient number, since it is larger than the sum of its proper divisors (32163871).

159784745 is an equidigital number, since it uses as much as digits as its factorization.

159784745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34491.

The product of its digits is 1411200, while the sum is 50.

The square root of 159784745 is about 12640.5990759932. The cubic root of 159784745 is about 542.6399590754.

The spelling of 159784745 in words is "one hundred fifty-nine million, seven hundred eighty-four thousand, seven hundred forty-five".