2021868052 has 24 divisors (see below), whose sum is σ = 3852928800. Its totient is φ = 924700896.

The previous prime is 2021868049. The next prime is 2021868053. The reversal of 2021868052 is 2508681202.

It is a junction number, because it is equal to n+sod(n) for n = 2021867999 and 2021868017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021868053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456478 + ... + 460885.

It is an arithmetic number, because the mean of its divisors is an integer number (160538700).

Almost surely, 2^2021868052 is an apocalyptic number.

It is an amenable number.

2021868052 is a deficient number, since it is larger than the sum of its proper divisors (1831060748).

2021868052 is a wasteful number, since it uses less digits than its factorization.

2021868052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917415 (or 917413 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 2021868052 is about 44965.1871118091. The cubic root of 2021868052 is about 1264.4964176358.

The spelling of 2021868052 in words is "two billion, twenty-one million, eight hundred sixty-eight thousand, fifty-two".