2020637545 has 4 divisors (see below), whose sum is σ = 2424765060. Its totient is φ = 1616510032.

The previous prime is 2020637539. The next prime is 2020637557. The reversal of 2020637545 is 5457360202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1363381776 + 657255769 = 36924^2 + 25637^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020637545 - 2³ = 2020637537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020637545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202063750 + ... + 202063759.

It is an arithmetic number, because the mean of its divisors is an integer number (606191265).

Almost surely, 2^2020637545 is an apocalyptic number.

It is an amenable number.

2020637545 is a deficient number, since it is larger than the sum of its proper divisors (404127515).

2020637545 is an equidigital number, since it uses as much as digits as its factorization.

2020637545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404127514.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 2020637545 is about 44951.5021439773. The cubic root of 2020637545 is about 1264.2398418003.

Adding to 2020637545 its reverse (5457360202), we get a palindrome (7477997747).

The spelling of 2020637545 in words is "two billion, twenty million, six hundred thirty-seven thousand, five hundred forty-five".