4628281993 has 2 divisors, whose sum is σ = 4628281994. Its totient is φ = 4628281992.

The previous prime is 4628281981. The next prime is 4628282017. The reversal of 4628281993 is 3991828264.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4226560144 + 401721849 = 65012^2 + 20043^2 .

It is a cyclic number.

It is not a de Polignac number, because 4628281993 - 2⁹ = 4628281481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4628281993.

It is not a weakly prime, because it can be changed into another prime (4628281793) 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 as a sum of consecutive naturals, namely, 2314140996 + 2314140997.

It is an arithmetic number, because the mean of its divisors is an integer number (2314140997).

Almost surely, 2^4628281993 is an apocalyptic number.

It is an amenable number.

4628281993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4628281993 is an equidigital number, since it uses as much as digits as its factorization.

4628281993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 52.

The square root of 4628281993 is about 68031.4779568987. The cubic root of 4628281993 is about 1666.5049345773.

The spelling of 4628281993 in words is "four billion, six hundred twenty-eight million, two hundred eighty-one thousand, nine hundred ninety-three".