2061126858 has 64 divisors (see below), whose sum is σ = 4822364160. Its totient is φ = 575095872.

The previous prime is 2061126857. The next prime is 2061126863. The reversal of 2061126858 is 8586211602.

It is not an unprimeable number, because it can be changed into a prime (2061126857) 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 31 ways as a sum of consecutive naturals, for example, 503263 + ... + 507341.

It is an arithmetic number, because the mean of its divisors is an integer number (75349440).

Almost surely, 2^2061126858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2061126858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2411182080).

2061126858 is an abundant number, since it is smaller than the sum of its proper divisors (2761237302).

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

2061126858 is a wasteful number, since it uses less digits than its factorization.

2061126858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 2061126858 is about 45399.6349985328. The cubic root of 2061126858 is about 1272.6282928588.

The spelling of 2061126858 in words is "two billion, sixty-one million, one hundred twenty-six thousand, eight hundred fifty-eight".