5178972091 has 8 divisors (see below), whose sum is σ = 5194368000. Its totient is φ = 5163594240.

The previous prime is 5178972083. The next prime is 5178972109. The reversal of 5178972091 is 1902798715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5178972091 - 2³ = 5178972083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5178972061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745926 + ... + 752836.

It is an arithmetic number, because the mean of its divisors is an integer number (649296000).

Almost surely, 2^5178972091 is an apocalyptic number.

5178972091 is a deficient number, since it is larger than the sum of its proper divisors (15395909).

5178972091 is a wasteful number, since it uses less digits than its factorization.

5178972091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9029.

The product of its (nonzero) digits is 317520, while the sum is 49.

The square root of 5178972091 is about 71965.0754949927. The cubic root of 5178972091 is about 1730.1397740877.

The spelling of 5178972091 in words is "five billion, one hundred seventy-eight million, nine hundred seventy-two thousand, ninety-one".