49993185813 has 16 divisors (see below), whose sum is σ = 67218465600. Its totient is φ = 33049105664.

The previous prime is 49993185799. The next prime is 49993185857. The reversal of 49993185813 is 31858139994.

It is a cyclic number.

It is not a de Polignac number, because 49993185813 - 2⁴ = 49993185797 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49993185883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170770 + ... + 359372.

It is an arithmetic number, because the mean of its divisors is an integer number (4201154100).

Almost surely, 2^49993185813 is an apocalyptic number.

It is an amenable number.

49993185813 is a deficient number, since it is larger than the sum of its proper divisors (17225279787).

49993185813 is a wasteful number, since it uses less digits than its factorization.

49993185813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189348.

The product of its digits is 8398080, while the sum is 60.

The spelling of 49993185813 in words is "forty-nine billion, nine hundred ninety-three million, one hundred eighty-five thousand, eight hundred thirteen".