2020919 has 4 divisors (see below), whose sum is σ = 2023944. Its totient is φ = 2017896.

The previous prime is 2020913. The next prime is 2020933. The reversal of 2020919 is 9190202.

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

It is a cyclic number.

It is not a de Polignac number, because 2020919 - 2⁸ = 2020663 is a prime.

It is a super-2 number, since 2×2020919² = 8168227209122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020894 and 2020903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020913) 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, 17 + ... + 2010.

It is an arithmetic number, because the mean of its divisors is an integer number (505986).

2^2020919 is an apocalyptic number.

2020919 is a deficient number, since it is larger than the sum of its proper divisors (3025).

2020919 is an equidigital number, since it uses as much as digits as its factorization.

2020919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2020919 is about 1421.5903066636. The cubic root of 2020919 is about 126.4298537814.

The spelling of 2020919 in words is "two million, twenty thousand, nine hundred nineteen".