28434558619 has 2 divisors, whose sum is σ = 28434558620. Its totient is φ = 28434558618.

The previous prime is 28434558601. The next prime is 28434558653. The reversal of 28434558619 is 91685543482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28434558619 - 2⁹ = 28434558107 is a prime.

It is a super-2 number, since 2×28434558619² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28434558619.

It is not a weakly prime, because it can be changed into another prime (28434558419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14217279309 + 14217279310.

It is an arithmetic number, because the mean of its divisors is an integer number (14217279310).

Almost surely, 2^28434558619 is an apocalyptic number.

28434558619 is a deficient number, since it is larger than the sum of its proper divisors (1).

28434558619 is an equidigital number, since it uses as much as digits as its factorization.

28434558619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8294400, while the sum is 55.

The spelling of 28434558619 in words is "twenty-eight billion, four hundred thirty-four million, five hundred fifty-eight thousand, six hundred nineteen".