28613792989 has 2 divisors, whose sum is σ = 28613792990. Its totient is φ = 28613792988.

The previous prime is 28613792983. The next prime is 28613793097. The reversal of 28613792989 is 98929731682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21266388900 + 7347404089 = 145830^2 + 85717^2 .

It is a cyclic number.

It is not a de Polignac number, because 28613792989 - 2²¹ = 28611695837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28613792989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28613792983) 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, 14306896494 + 14306896495.

It is an arithmetic number, because the mean of its divisors is an integer number (14306896495).

Almost surely, 2^28613792989 is an apocalyptic number.

It is an amenable number.

28613792989 is a deficient number, since it is larger than the sum of its proper divisors (1).

28613792989 is an equidigital number, since it uses as much as digits as its factorization.

28613792989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23514624, while the sum is 64.

The spelling of 28613792989 in words is "twenty-eight billion, six hundred thirteen million, seven hundred ninety-two thousand, nine hundred eighty-nine".