28451842519 has 2 divisors, whose sum is σ = 28451842520. Its totient is φ = 28451842518.

The previous prime is 28451842483. The next prime is 28451842547. The reversal of 28451842519 is 91524815482.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28451842519 - 2²¹ = 28449745367 is a prime.

It is a super-2 number, since 2×28451842519² (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 (28451842019) 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, 14225921259 + 14225921260.

It is an arithmetic number, because the mean of its divisors is an integer number (14225921260).

Almost surely, 2^28451842519 is an apocalyptic number.

28451842519 is a deficient number, since it is larger than the sum of its proper divisors (1).

28451842519 is an equidigital number, since it uses as much as digits as its factorization.

28451842519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921600, while the sum is 49.

The spelling of 28451842519 in words is "twenty-eight billion, four hundred fifty-one million, eight hundred forty-two thousand, five hundred nineteen".