8078547819 has 4 divisors (see below), whose sum is σ = 10771397096. Its totient is φ = 5385698544.

The previous prime is 8078547817. The next prime is 8078547857. The reversal of 8078547819 is 9187458708.

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

It is not a de Polignac number, because 8078547819 - 2¹ = 8078547817 is a prime.

It is a super-2 number, since 2×8078547819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8078547817) 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, 1346424634 + ... + 1346424639.

It is an arithmetic number, because the mean of its divisors is an integer number (2692849274).

Almost surely, 2^8078547819 is an apocalyptic number.

8078547819 is a deficient number, since it is larger than the sum of its proper divisors (2692849277).

8078547819 is a wasteful number, since it uses less digits than its factorization.

8078547819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692849276.

The product of its (nonzero) digits is 4515840, while the sum is 57.

The square root of 8078547819 is about 89880.7422032106. The cubic root of 8078547819 is about 2006.5243449016.

The spelling of 8078547819 in words is "eight billion, seventy-eight million, five hundred forty-seven thousand, eight hundred nineteen".