2126617794 has 128 divisors (see below), whose sum is σ = 5622988800. Its totient is φ = 582966720.

The previous prime is 2126617781. The next prime is 2126617799. The reversal of 2126617794 is 4977166212.

2126617794 is a `hidden beast` number, since 2 + 1 + 26 + 617 + 7 + 9 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (2126617799) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1487472 + ... + 1488900.

It is an arithmetic number, because the mean of its divisors is an integer number (43929600).

Almost surely, 2^2126617794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2126617794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2811494400).

2126617794 is an abundant number, since it is smaller than the sum of its proper divisors (3496371006).

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

2126617794 is a wasteful number, since it uses less digits than its factorization.

2126617794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1599 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 2126617794 is about 46115.2663876075. The cubic root of 2126617794 is about 1285.9669717006.

It can be divided in two parts, 21266 and 17794, that added together give a triangular number (39060 = T₂₇₉).

The spelling of 2126617794 in words is "two billion, one hundred twenty-six million, six hundred seventeen thousand, seven hundred ninety-four".