2020020191 has 16 divisors (see below), whose sum is σ = 2370954240. Its totient is φ = 1685090400.

The previous prime is 2020020161. The next prime is 2020020193. The reversal of 2020020191 is 1910200202.

It is not a de Polignac number, because 2020020191 - 2⁶ = 2020020127 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 (2020020193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41741 + ... + 76041.

It is an arithmetic number, because the mean of its divisors is an integer number (148184640).

Almost surely, 2^2020020191 is an apocalyptic number.

2020020191 is a deficient number, since it is larger than the sum of its proper divisors (350934049).

2020020191 is a wasteful number, since it uses less digits than its factorization.

2020020191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34534.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2020020191 is about 44944.6347298540. The cubic root of 2020020191 is about 1264.1110766614. Note that the first 3 decimals are identical.

Adding to 2020020191 its reverse (1910200202), we get a palindrome (3930220393).

The spelling of 2020020191 in words is "two billion, twenty million, twenty thousand, one hundred ninety-one".