2126531579 has 4 divisors (see below), whose sum is σ = 2156482800. Its totient is φ = 2096580360.

The previous prime is 2126531569. The next prime is 2126531593. The reversal of 2126531579 is 9751356212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126531579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126531569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14975504 + ... + 14975645.

It is an arithmetic number, because the mean of its divisors is an integer number (539120700).

Almost surely, 2^2126531579 is an apocalyptic number.

2126531579 is a deficient number, since it is larger than the sum of its proper divisors (29951221).

2126531579 is an equidigital number, since it uses as much as digits as its factorization.

2126531579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29951220.

The product of its digits is 113400, while the sum is 41.

The square root of 2126531579 is about 46114.3316009242. The cubic root of 2126531579 is about 1285.9495933794.

The spelling of 2126531579 in words is "two billion, one hundred twenty-six million, five hundred thirty-one thousand, five hundred seventy-nine".