28418707619 has 4 divisors (see below), whose sum is σ = 28430849520. Its totient is φ = 28406565720.

The previous prime is 28418707589. The next prime is 28418707621. The reversal of 28418707619 is 91670781482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28418707619 - 2⁸ = 28418707363 is a prime.

It is a super-2 number, since 2×28418707619² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28418707699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6067439 + ... + 6072120.

It is an arithmetic number, because the mean of its divisors is an integer number (7107712380).

Almost surely, 2^28418707619 is an apocalyptic number.

28418707619 is a deficient number, since it is larger than the sum of its proper divisors (12141901).

28418707619 is a wasteful number, since it uses less digits than its factorization.

28418707619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12141900.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 28418707619 in words is "twenty-eight billion, four hundred eighteen million, seven hundred seven thousand, six hundred nineteen".