2820053387 has 4 divisors (see below), whose sum is σ = 2826419640. Its totient is φ = 2813687136.

The previous prime is 2820053303. The next prime is 2820053389. The reversal of 2820053387 is 7833500282.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2820053387 is a prime.

It is a super-2 number, since 2×2820053387² = 15905402211060343538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2820053387.

It is not an unprimeable number, because it can be changed into a prime (2820053389) 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, 3182462 + ... + 3183347.

It is an arithmetic number, because the mean of its divisors is an integer number (706604910).

Almost surely, 2^2820053387 is an apocalyptic number.

2820053387 is a deficient number, since it is larger than the sum of its proper divisors (6366253).

2820053387 is an equidigital number, since it uses as much as digits as its factorization.

2820053387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6366252.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 2820053387 is about 53104.1748547136. The cubic root of 2820053387 is about 1412.8165598689.

The spelling of 2820053387 in words is "two billion, eight hundred twenty million, fifty-three thousand, three hundred eighty-seven".