159789474 has 48 divisors (see below), whose sum is σ = 376589304. Its totient is φ = 48672000.

The previous prime is 159789467. The next prime is 159789499. The reversal of 159789474 is 474987951.

159789474 is a `hidden beast` number, since 1 + 5 + 97 + 89 + 474 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 156875625 + 2913849 = 12525^2 + 1707^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 159789474.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 20254 + ... + 27014.

Almost surely, 2^159789474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159789474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188294652).

159789474 is an abundant number, since it is smaller than the sum of its proper divisors (216799830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159789474 is a wasteful number, since it uses less digits than its factorization.

159789474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6883 (or 6880 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 159789474 is about 12640.7861306170. The cubic root of 159789474 is about 542.6453123588.

It can be divided in two parts, 15978 and 9474, that added together give a palindrome (25452).

The spelling of 159789474 in words is "one hundred fifty-nine million, seven hundred eighty-nine thousand, four hundred seventy-four".