1591253043 has 12 divisors (see below), whose sum is σ = 2180568600. Its totient is φ = 1032161472.

The previous prime is 1591253039. The next prime is 1591253063. The reversal of 1591253043 is 3403521951.

1591253043 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1591253043 - 2² = 1591253039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1591252995 and 1591253013.

It is not an unprimeable number, because it can be changed into a prime (1591253063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189618 + ... + 197831.

It is an arithmetic number, because the mean of its divisors is an integer number (181714050).

Almost surely, 2^1591253043 is an apocalyptic number.

1591253043 is a deficient number, since it is larger than the sum of its proper divisors (589315557).

1591253043 is an equidigital number, since it uses as much as digits as its factorization.

1591253043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387526 (or 387489 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 1591253043 is about 39890.5131954955. The cubic root of 1591253043 is about 1167.4718447297.

Adding to 1591253043 its reverse (3403521951), we get a palindrome (4994774994).

The spelling of 1591253043 in words is "one billion, five hundred ninety-one million, two hundred fifty-three thousand, forty-three".