5278726819 has 4 divisors (see below), whose sum is σ = 5282292600. Its totient is φ = 5275161040.

The previous prime is 5278726751. The next prime is 5278726829. The reversal of 5278726819 is 9186278725.

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 5278726819 - 2²³ = 5270338211 is a prime.

It is a super-2 number, since 2×5278726819² = 55729913659259717522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5278726819.

It is not an unprimeable number, because it can be changed into a prime (5278726829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780669 + ... + 1783630.

It is an arithmetic number, because the mean of its divisors is an integer number (1320573150).

Almost surely, 2^5278726819 is an apocalyptic number.

5278726819 is a deficient number, since it is larger than the sum of its proper divisors (3565781).

5278726819 is a wasteful number, since it uses less digits than its factorization.

5278726819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565780.

The product of its digits is 3386880, while the sum is 55.

The square root of 5278726819 is about 72654.8471817263. The cubic root of 5278726819 is about 1741.1775640790.

The spelling of 5278726819 in words is "five billion, two hundred seventy-eight million, seven hundred twenty-six thousand, eight hundred nineteen".