2021648073 has 4 divisors (see below), whose sum is σ = 2695530768. Its totient is φ = 1347765380.

The previous prime is 2021648011. The next prime is 2021648113. The reversal of 2021648073 is 3708461202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021648073 - 2⁹ = 2021647561 is a prime.

It is a super-2 number, since 2×2021648073² = 8174121862129226658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021648003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336941343 + ... + 336941348.

It is an arithmetic number, because the mean of its divisors is an integer number (673882692).

Almost surely, 2^2021648073 is an apocalyptic number.

It is an amenable number.

2021648073 is a deficient number, since it is larger than the sum of its proper divisors (673882695).

2021648073 is an equidigital number, since it uses as much as digits as its factorization.

2021648073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673882694.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 2021648073 is about 44962.7409418065. The cubic root of 2021648073 is about 1264.4505569534.

The spelling of 2021648073 in words is "two billion, twenty-one million, six hundred forty-eight thousand, seventy-three".