28418321387 has 2 divisors, whose sum is σ = 28418321388. Its totient is φ = 28418321386.

The previous prime is 28418321369. The next prime is 28418321443. The reversal of 28418321387 is 78312381482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28418321387 - 2¹⁶ = 28418255851 is a prime.

It is not a weakly prime, because it can be changed into another prime (28418321587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14209160693 + 14209160694.

It is an arithmetic number, because the mean of its divisors is an integer number (14209160694).

Almost surely, 2^28418321387 is an apocalyptic number.

28418321387 is a deficient number, since it is larger than the sum of its proper divisors (1).

28418321387 is an equidigital number, since it uses as much as digits as its factorization.

28418321387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 47.

The spelling of 28418321387 in words is "twenty-eight billion, four hundred eighteen million, three hundred twenty-one thousand, three hundred eighty-seven".