10281919993 has 2 divisors, whose sum is σ = 10281919994. Its totient is φ = 10281919992.

The previous prime is 10281919981. The next prime is 10281920057. The reversal of 10281919993 is 39991918201.

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., 10190296809 + 91623184 = 100947^2 + 9572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10281919993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10281919993.

It is not a weakly prime, because it can be changed into another prime (10281919903) 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, 5140959996 + 5140959997.

It is an arithmetic number, because the mean of its divisors is an integer number (5140959997).

Almost surely, 2^10281919993 is an apocalyptic number.

It is an amenable number.

10281919993 is a deficient number, since it is larger than the sum of its proper divisors (1).

10281919993 is an equidigital number, since it uses as much as digits as its factorization.

10281919993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 52.

The spelling of 10281919993 in words is "ten billion, two hundred eighty-one million, nine hundred nineteen thousand, nine hundred ninety-three".