2020819477 has 2 divisors, whose sum is σ = 2020819478. Its totient is φ = 2020819476.

The previous prime is 2020819403. The next prime is 2020819487. The reversal of 2020819477 is 7749180202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1907418276 + 113401201 = 43674^2 + 10649^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020819477 - 2⁷ = 2020819349 is a prime.

It is a super-2 number, since 2×2020819477² = 8167422717245107058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020819487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010409738 + 1010409739.

It is an arithmetic number, because the mean of its divisors is an integer number (1010409739).

Almost surely, 2^2020819477 is an apocalyptic number.

It is an amenable number.

2020819477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020819477 is an equidigital number, since it uses as much as digits as its factorization.

2020819477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2020819477 is about 44953.5257460413. The cubic root of 2020819477 is about 1264.2777834194.

Adding to 2020819477 its reverse (7749180202), we get a palindrome (9769999679).

The spelling of 2020819477 in words is "two billion, twenty million, eight hundred nineteen thousand, four hundred seventy-seven".