28438087019 has 2 divisors, whose sum is σ = 28438087020. Its totient is φ = 28438087018.

The previous prime is 28438087003. The next prime is 28438087079. The reversal of 28438087019 is 91078083482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28438087019 - 2⁴ = 28438087003 is a prime.

It is a super-2 number, since 2×28438087019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28438087079) 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, 14219043509 + 14219043510.

It is an arithmetic number, because the mean of its divisors is an integer number (14219043510).

Almost surely, 2^28438087019 is an apocalyptic number.

28438087019 is a deficient number, since it is larger than the sum of its proper divisors (1).

28438087019 is an equidigital number, since it uses as much as digits as its factorization.

28438087019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 28438087019 in words is "twenty-eight billion, four hundred thirty-eight million, eighty-seven thousand, nineteen".