5186638457 has 64 divisors (see below), whose sum is σ = 7302113280. Its totient is φ = 3553804800.

The previous prime is 5186638447. The next prime is 5186638469. The reversal of 5186638457 is 7548366815.

It is not a de Polignac number, because 5186638457 - 2²⁰ = 5185589881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5186638399 and 5186638408.

It is not an unprimeable number, because it can be changed into a prime (5186638447) 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 63 ways as a sum of consecutive naturals, for example, 1763294 + ... + 1766232.

It is an arithmetic number, because the mean of its divisors is an integer number (114095520).

Almost surely, 2^5186638457 is an apocalyptic number.

It is an amenable number.

5186638457 is a deficient number, since it is larger than the sum of its proper divisors (2115474823).

5186638457 is a wasteful number, since it uses less digits than its factorization.

5186638457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054.

The product of its digits is 4838400, while the sum is 53.

The square root of 5186638457 is about 72018.3202872713. The cubic root of 5186638457 is about 1730.9930544361.

The spelling of 5186638457 in words is "five billion, one hundred eighty-six million, six hundred thirty-eight thousand, four hundred fifty-seven".