2820238049 has 4 divisors (see below), whose sum is σ = 2848161300. Its totient is φ = 2792314800.

The previous prime is 2820238037. The next prime is 2820238063. The reversal of 2820238049 is 9408320282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9408320282 = 2 ⋅4704160141.

It can be written as a sum of positive squares in 2 ways, for example, as 2486518225 + 333719824 = 49865^2 + 18268^2 .

It is a cyclic number.

It is not a de Polignac number, because 2820238049 - 2⁸ = 2820237793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2820238019) 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, 13961474 + ... + 13961675.

It is an arithmetic number, because the mean of its divisors is an integer number (712040325).

Almost surely, 2^2820238049 is an apocalyptic number.

It is an amenable number.

2820238049 is a deficient number, since it is larger than the sum of its proper divisors (27923251).

2820238049 is a wasteful number, since it uses less digits than its factorization.

2820238049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27923250.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 2820238049 is about 53105.9135031119. The cubic root of 2820238049 is about 1412.8473970909.

The spelling of 2820238049 in words is "two billion, eight hundred twenty million, two hundred thirty-eight thousand, forty-nine".