5181878007 has 12 divisors (see below), whose sum is σ = 7511575344. Its totient is φ = 3442289760.

The previous prime is 5181877979. The next prime is 5181878011. The reversal of 5181878007 is 7008781815.

It is a de Polignac number, because none of the positive numbers 2^k-5181878007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5181878027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1021963 + ... + 1027020.

It is an arithmetic number, because the mean of its divisors is an integer number (625964612).

Almost surely, 2^5181878007 is an apocalyptic number.

5181878007 is a deficient number, since it is larger than the sum of its proper divisors (2329697337).

5181878007 is a wasteful number, since it uses less digits than its factorization.

5181878007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049270 (or 2049267 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 45.

The square root of 5181878007 is about 71985.2624291945. The cubic root of 5181878007 is about 1730.4633068095.

The spelling of 5181878007 in words is "five billion, one hundred eighty-one million, eight hundred seventy-eight thousand, seven".