2818027921 has 4 divisors (see below), whose sum is σ = 2966345200. Its totient is φ = 2669710644.

The previous prime is 2818027871. The next prime is 2818027931. The reversal of 2818027921 is 1297208182.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2818027921 - 2¹⁷ = 2817896849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2818027931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74158611 + ... + 74158648.

It is an arithmetic number, because the mean of its divisors is an integer number (741586300).

Almost surely, 2^2818027921 is an apocalyptic number.

It is an amenable number.

2818027921 is a deficient number, since it is larger than the sum of its proper divisors (148317279).

2818027921 is a wasteful number, since it uses less digits than its factorization.

2818027921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148317278.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 2818027921 is about 53085.1007439941. The cubic root of 2818027921 is about 1412.4782332616.

The spelling of 2818027921 in words is "two billion, eight hundred eighteen million, twenty-seven thousand, nine hundred twenty-one".