49631643 has 8 divisors (see below), whose sum is σ = 73528400. Its totient is φ = 33087744.

The previous prime is 49631633. The next prime is 49631663. The reversal of 49631643 is 34613694.

49631643 is a `hidden beast` number, since 4 + 9 + 6 + 3 + 1 + 643 = 666.

It is not a de Polignac number, because 49631643 - 2¹³ = 49623451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49631598 and 49631607.

It is not an unprimeable number, because it can be changed into a prime (49631623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919078 + ... + 919131.

It is an arithmetic number, because the mean of its divisors is an integer number (9191050).

Almost surely, 2^49631643 is an apocalyptic number.

49631643 is a deficient number, since it is larger than the sum of its proper divisors (23896757).

49631643 is a wasteful number, since it uses less digits than its factorization.

49631643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838218 (or 1838212 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 49631643 is about 7044.9728885213. The cubic root of 49631643 is about 367.4962265335.

The spelling of 49631643 in words is "forty-nine million, six hundred thirty-one thousand, six hundred forty-three".