28397426219 has 2 divisors, whose sum is σ = 28397426220. Its totient is φ = 28397426218.

The previous prime is 28397426177. The next prime is 28397426221. The reversal of 28397426219 is 91262479382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28397426219 is a prime.

It is a super-2 number, since 2×28397426219² (a number of 22 digits) contains 22 as substring.

Together with 28397426221, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28397426269) 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, 14198713109 + 14198713110.

It is an arithmetic number, because the mean of its divisors is an integer number (14198713110).

Almost surely, 2^28397426219 is an apocalyptic number.

28397426219 is a deficient number, since it is larger than the sum of its proper divisors (1).

28397426219 is an equidigital number, since it uses as much as digits as its factorization.

28397426219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 53.

The spelling of 28397426219 in words is "twenty-eight billion, three hundred ninety-seven million, four hundred twenty-six thousand, two hundred nineteen".