2021453013 has 4 divisors (see below), whose sum is σ = 2695270688. Its totient is φ = 1347635340.

The previous prime is 2021452987. The next prime is 2021453041. The reversal of 2021453013 is 3103541202.

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 not a de Polignac number, because 2021453013 - 2⁹ = 2021452501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021454013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336908833 + ... + 336908838.

It is an arithmetic number, because the mean of its divisors is an integer number (673817672).

Almost surely, 2^2021453013 is an apocalyptic number.

It is an amenable number.

2021453013 is a deficient number, since it is larger than the sum of its proper divisors (673817675).

2021453013 is an equidigital number, since it uses as much as digits as its factorization.

2021453013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673817674.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2021453013 is about 44960.5717601545. The cubic root of 2021453013 is about 1264.4098885400.

Adding to 2021453013 its reverse (3103541202), we get a palindrome (5124994215).

The spelling of 2021453013 in words is "two billion, twenty-one million, four hundred fifty-three thousand, thirteen".