5138009685 has 64 divisors (see below), whose sum is σ = 9350876160. Its totient is φ = 2675566080.

The previous prime is 5138009677. The next prime is 5138009689. The reversal of 5138009685 is 5869008315.

It is not a de Polignac number, because 5138009685 - 2³ = 5138009677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 5138009685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5138009689) 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 63 ways as a sum of consecutive naturals, for example, 3888825 + ... + 3890145.

It is an arithmetic number, because the mean of its divisors is an integer number (146107440).

Almost surely, 2^5138009685 is an apocalyptic number.

It is an amenable number.

5138009685 is a deficient number, since it is larger than the sum of its proper divisors (4212866475).

5138009685 is a wasteful number, since it uses less digits than its factorization.

5138009685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 5138009685 is about 71679.9113071438. The cubic root of 5138009685 is about 1725.5662564418.

The spelling of 5138009685 in words is "five billion, one hundred thirty-eight million, nine thousand, six hundred eighty-five".