5198135685 has 8 divisors (see below), whose sum is σ = 8317017120. Its totient is φ = 2772339024.

The previous prime is 5198135659. The next prime is 5198135693. The reversal of 5198135685 is 5865318915.

It is a happy number.

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

It is not a de Polignac number, because 5198135685 - 2¹¹ = 5198133637 is a prime.

It is a super-2 number, since 2×5198135685² = 54041229199340838450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173271175 + ... + 173271204.

It is an arithmetic number, because the mean of its divisors is an integer number (1039627140).

Almost surely, 2^5198135685 is an apocalyptic number.

It is an amenable number.

5198135685 is a deficient number, since it is larger than the sum of its proper divisors (3118881435).

5198135685 is a wasteful number, since it uses less digits than its factorization.

5198135685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346542387.

The product of its digits is 1296000, while the sum is 51.

The square root of 5198135685 is about 72098.0976517411. The cubic root of 5198135685 is about 1732.2711420160.

The spelling of 5198135685 in words is "five billion, one hundred ninety-eight million, one hundred thirty-five thousand, six hundred eighty-five".