28298364109 has 2 divisors, whose sum is σ = 28298364110. Its totient is φ = 28298364108.

The previous prime is 28298364089. The next prime is 28298364131. The reversal of 28298364109 is 90146389282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14750102500 + 13548261609 = 121450^2 + 116397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28298364109 is a prime.

It is a super-2 number, since 2×28298364109² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28298364179) 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, 14149182054 + 14149182055.

It is an arithmetic number, because the mean of its divisors is an integer number (14149182055).

Almost surely, 2^28298364109 is an apocalyptic number.

It is an amenable number.

28298364109 is a deficient number, since it is larger than the sum of its proper divisors (1).

28298364109 is an equidigital number, since it uses as much as digits as its factorization.

28298364109 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 28298364109 in words is "twenty-eight billion, two hundred ninety-eight million, three hundred sixty-four thousand, one hundred nine".