1591143424 has 176 divisors, whose sum is σ = 3714076800. Its totient is φ = 674758656.

The previous prime is 1591143401. The next prime is 1591143431. The reversal of 1591143424 is 4243411951.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 1591143424.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17877972 + ... + 17878060.

Almost surely, 2^1591143424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1591143424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1857038400).

1591143424 is an abundant number, since it is smaller than the sum of its proper divisors (2122933376).

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

1591143424 is a wasteful number, since it uses less digits than its factorization.

1591143424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 200 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 1591143424 is about 39889.1391734642. The cubic root of 1591143424 is about 1167.4450356613.

The spelling of 1591143424 in words is "one billion, five hundred ninety-one million, one hundred forty-three thousand, four hundred twenty-four".