2091320126 has 16 divisors (see below), whose sum is σ = 3740995584. Its totient is φ = 857311224.

The previous prime is 2091320117. The next prime is 2091320129. The reversal of 2091320126 is 6210231902.

It is a junction number, because it is equal to n+sod(n) for n = 2091320095 and 2091320104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091320129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3247070 + ... + 3247713.

It is an arithmetic number, because the mean of its divisors is an integer number (233812224).

Almost surely, 2^2091320126 is an apocalyptic number.

2091320126 is a deficient number, since it is larger than the sum of its proper divisors (1649675458).

2091320126 is a wasteful number, since it uses less digits than its factorization.

2091320126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494815.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 2091320126 is about 45730.9536965937. The cubic root of 2091320126 is about 1278.8124006692.

The spelling of 2091320126 in words is "two billion, ninety-one million, three hundred twenty thousand, one hundred twenty-six".