2126818694 has 288 divisors, whose sum is σ = 5046935040. Its totient is φ = 652354560.

The previous prime is 2126818691. The next prime is 2126818723. The reversal of 2126818694 is 4968186212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126818691) 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 143 ways as a sum of consecutive naturals, for example, 92470367 + ... + 92470389.

It is an arithmetic number, because the mean of its divisors is an integer number (17524080).

Almost surely, 2^2126818694 is an apocalyptic number.

2126818694 is an abundant number, since it is smaller than the sum of its proper divisors (2920116346).

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

2126818694 is a wasteful number, since it uses less digits than its factorization.

2126818694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 92 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 2126818694 is about 46117.4445736101. Note that the first 3 decimals coincide. The cubic root of 2126818694 is about 1286.0074652063.

The spelling of 2126818694 in words is "two billion, one hundred twenty-six million, eight hundred eighteen thousand, six hundred ninety-four".