49181834637 has 24 divisors (see below), whose sum is σ = 78897888000. Its totient is φ = 30265741584.

The previous prime is 49181834629. The next prime is 49181834641. The reversal of 49181834637 is 73643818194.

49181834637 is a `hidden beast` number, since 491 + 8 + 1 + 83 + 46 + 37 = 666.

It is not a de Polignac number, because 49181834637 - 2³ = 49181834629 is a prime.

It is a super-2 number, since 2×49181834637² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49181834137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5384637 + ... + 5393762.

It is an arithmetic number, because the mean of its divisors is an integer number (3287412000).

Almost surely, 2^49181834637 is an apocalyptic number.

It is an amenable number.

49181834637 is a deficient number, since it is larger than the sum of its proper divisors (29716053363).

49181834637 is a wasteful number, since it uses less digits than its factorization.

49181834637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10778434 (or 10778415 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 49181834637 in words is "forty-nine billion, one hundred eighty-one million, eight hundred thirty-four thousand, six hundred thirty-seven".