2020855769 has 4 divisors (see below), whose sum is σ = 2032020900. Its totient is φ = 2009690640.

The previous prime is 2020855741. The next prime is 2020855799. The reversal of 2020855769 is 9675580202.

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 840246169 + 1180609600 = 28987^2 + 34360^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020855769 - 2⁸ = 2020855513 is a prime.

It is a super-2 number, since 2×2020855769² = 8167716078201162722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020855729) 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, 5582294 + ... + 5582655.

It is an arithmetic number, because the mean of its divisors is an integer number (508005225).

Almost surely, 2^2020855769 is an apocalyptic number.

It is an amenable number.

2020855769 is a deficient number, since it is larger than the sum of its proper divisors (11165131).

2020855769 is a wasteful number, since it uses less digits than its factorization.

2020855769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11165130.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 2020855769 is about 44953.9294055592. The cubic root of 2020855769 is about 1264.2853517838.

The spelling of 2020855769 in words is "two billion, twenty million, eight hundred fifty-five thousand, seven hundred sixty-nine".