2020185491 has 2 divisors, whose sum is σ = 2020185492. Its totient is φ = 2020185490.

The previous prime is 2020185487. The next prime is 2020185499. The reversal of 2020185491 is 1945810202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2020185491 - 2² = 2020185487 is a prime.

It is a super-2 number, since 2×2020185491² = 8162298836093822162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2020185499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010092745 + 1010092746.

It is an arithmetic number, because the mean of its divisors is an integer number (1010092746).

Almost surely, 2^2020185491 is an apocalyptic number.

2020185491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020185491 is an equidigital number, since it uses as much as digits as its factorization.

2020185491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2020185491 is about 44946.4736214088. The cubic root of 2020185491 is about 1264.1455568220.

Adding to 2020185491 its reverse (1945810202), we get a palindrome (3965995693).

The spelling of 2020185491 in words is "two billion, twenty million, one hundred eighty-five thousand, four hundred ninety-one".