1591641126 has 12 divisors (see below), whose sum is σ = 3448555812. Its totient is φ = 530547036.

The previous prime is 1591641083. The next prime is 1591641127. The reversal of 1591641126 is 6211461951.

1591641126 is a `hidden beast` number, since 1 + 5 + 9 + 1 + 641 + 1 + 2 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1591641127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44212236 + ... + 44212271.

It is an arithmetic number, because the mean of its divisors is an integer number (287379651).

Almost surely, 2^1591641126 is an apocalyptic number.

1591641126 is an abundant number, since it is smaller than the sum of its proper divisors (1856914686).

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

1591641126 is a wasteful number, since it uses less digits than its factorization.

1591641126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88424515 (or 88424512 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1591641126 is about 39895.3772510049. The cubic root of 1591641126 is about 1167.5667467002.

The spelling of 1591641126 in words is "one billion, five hundred ninety-one million, six hundred forty-one thousand, one hundred twenty-six".