2126691772 has 48 divisors (see below), whose sum is σ = 4102932960. Its totient is φ = 960325632.

The previous prime is 2126691769. The next prime is 2126691781. The reversal of 2126691772 is 2771966212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177879 + ... + 189457.

It is an arithmetic number, because the mean of its divisors is an integer number (85477770).

Almost surely, 2^2126691772 is an apocalyptic number.

It is an amenable number.

2126691772 is a deficient number, since it is larger than the sum of its proper divisors (1976241188).

2126691772 is a wasteful number, since it uses less digits than its factorization.

2126691772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11710 (or 11708 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 2126691772 is about 46116.0684794357. The cubic root of 2126691772 is about 1285.9818830403.

The spelling of 2126691772 in words is "two billion, one hundred twenty-six million, six hundred ninety-one thousand, seven hundred seventy-two".