2021641026 has 16 divisors (see below), whose sum is σ = 4044464544. Its totient is φ = 673683264.

The previous prime is 2021641009. The next prime is 2021641057. The reversal of 2021641026 is 6201461202.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2021640987 and 2021641005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26215 + ... + 68778.

It is an arithmetic number, because the mean of its divisors is an integer number (252779034).

Almost surely, 2^2021641026 is an apocalyptic number.

2021641026 is an abundant number, since it is smaller than the sum of its proper divisors (2022823518).

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

2021641026 is a wasteful number, since it uses less digits than its factorization.

2021641026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98545.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2021641026 is about 44962.6625768537. The cubic root of 2021641026 is about 1264.4490877571.

The spelling of 2021641026 in words is "two billion, twenty-one million, six hundred forty-one thousand, twenty-six".