2020454621 has 8 divisors (see below), whose sum is σ = 2141105400. Its totient is φ = 1903202560.

The previous prime is 2020454617. The next prime is 2020454633. The reversal of 2020454621 is 1264540202.

It can be written as a sum of positive squares in 4 ways, for example, as 940900 + 2019513721 = 970^2 + 44939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2020454621 - 2² = 2020454617 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 (2020454921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 848456 + ... + 850833.

It is an arithmetic number, because the mean of its divisors is an integer number (267638175).

Almost surely, 2^2020454621 is an apocalyptic number.

It is an amenable number.

2020454621 is a deficient number, since it is larger than the sum of its proper divisors (120650779).

2020454621 is a wasteful number, since it uses less digits than its factorization.

2020454621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699359.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2020454621 is about 44949.4674161997. The cubic root of 2020454621 is about 1264.2016910051.

Adding to 2020454621 its reverse (1264540202), we get a palindrome (3284994823).

The spelling of 2020454621 in words is "two billion, twenty million, four hundred fifty-four thousand, six hundred twenty-one".