49803813 has 12 divisors (see below), whose sum is σ = 73883628. Its totient is φ = 32304960.

The previous prime is 49803757. The next prime is 49803827. The reversal of 49803813 is 31830894.

It can be written as a sum of positive squares in 2 ways, for example, as 28708164 + 21095649 = 5358^2 + 4593^2 .

It is not a de Polignac number, because 49803813 - 2⁶ = 49803749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49803113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74448 + ... + 75113.

It is an arithmetic number, because the mean of its divisors is an integer number (6156969).

Almost surely, 2^49803813 is an apocalyptic number.

It is an amenable number.

49803813 is a deficient number, since it is larger than the sum of its proper divisors (24079815).

49803813 is a wasteful number, since it uses less digits than its factorization.

49803813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149604 (or 149601 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 49803813 is about 7057.1816612583. The cubic root of 49803813 is about 367.9206788908.

The spelling of 49803813 in words is "forty-nine million, eight hundred three thousand, eight hundred thirteen".