2021937617 has 6 divisors (see below), whose sum is σ = 2352049938. Its totient is φ = 1733089344.

The previous prime is 2021937607. The next prime is 2021937661. The reversal of 2021937617 is 7167391202.

It can be written as a sum of positive squares in only one way, i.e., 1120977361 + 900960256 = 33481^2 + 30016^2 .

It is not a de Polignac number, because 2021937617 - 2¹⁶ = 2021872081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021937607) 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 5 ways as a sum of consecutive naturals, for example, 20631968 + ... + 20632065.

It is an arithmetic number, because the mean of its divisors is an integer number (392008323).

Almost surely, 2^2021937617 is an apocalyptic number.

It is an amenable number.

2021937617 is a deficient number, since it is larger than the sum of its proper divisors (330112321).

2021937617 is an equidigital number, since it uses as much as digits as its factorization.

2021937617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41264047 (or 41264040 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 2021937617 is about 44965.9606480280. The cubic root of 2021937617 is about 1264.5109196841.

The spelling of 2021937617 in words is "two billion, twenty-one million, nine hundred thirty-seven thousand, six hundred seventeen".