2868016421 has 2 divisors, whose sum is σ = 2868016422. Its totient is φ = 2868016420.

The previous prime is 2868016391. The next prime is 2868016493. The reversal of 2868016421 is 1246108682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2810484196 + 57532225 = 53014^2 + 7585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2868016421 is a prime.

It is a super-2 number, since 2×2868016421² = 16451036382251298482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2868016621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1434008210 + 1434008211.

It is an arithmetic number, because the mean of its divisors is an integer number (1434008211).

Almost surely, 2^2868016421 is an apocalyptic number.

It is an amenable number.

2868016421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2868016421 is an equidigital number, since it uses as much as digits as its factorization.

2868016421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 2868016421 is about 53553.8646691348. The cubic root of 2868016421 is about 1420.7812306676.

The spelling of 2868016421 in words is "two billion, eight hundred sixty-eight million, sixteen thousand, four hundred twenty-one".