2126693091 has 16 divisors (see below), whose sum is σ = 2963810304. Its totient is φ = 1353891264.

The previous prime is 2126693077. The next prime is 2126693167. The reversal of 2126693091 is 1903966212.

It is not a de Polignac number, because 2126693091 - 2⁷ = 2126692963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2126693021) 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 15 ways as a sum of consecutive naturals, for example, 16495 + ... + 67271.

It is an arithmetic number, because the mean of its divisors is an integer number (185238144).

Almost surely, 2^2126693091 is an apocalyptic number.

2126693091 is a deficient number, since it is larger than the sum of its proper divisors (837117213).

2126693091 is a wasteful number, since it uses less digits than its factorization.

2126693091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51410.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 2126693091 is about 46116.0827803056. The cubic root of 2126693091 is about 1285.9821489008.

The spelling of 2126693091 in words is "two billion, one hundred twenty-six million, six hundred ninety-three thousand, ninety-one".