2021973016 has 32 divisors (see below), whose sum is σ = 4472570880. Its totient is φ = 838605600.

The previous prime is 2021973001. The next prime is 2021973017. The reversal of 2021973016 is 6103791202.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021973017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580630 + ... + 584101.

It is an arithmetic number, because the mean of its divisors is an integer number (139767840).

Almost surely, 2^2021973016 is an apocalyptic number.

It is an amenable number.

2021973016 is an abundant number, since it is smaller than the sum of its proper divisors (2450597864).

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

2021973016 is a wasteful number, since it uses less digits than its factorization.

2021973016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164775 (or 1164771 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 2021973016 is about 44966.3542662734. The cubic root of 2021973016 is about 1264.5182991009.

The spelling of 2021973016 in words is "two billion, twenty-one million, nine hundred seventy-three thousand, sixteen".