49618791 has 8 divisors (see below), whose sum is σ = 73509360. Its totient is φ = 33079176.

The previous prime is 49618787. The next prime is 49618831. The reversal of 49618791 is 19781694.

It is a happy number.

It is not a de Polignac number, because 49618791 - 2² = 49618787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49618711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918840 + ... + 918893.

It is an arithmetic number, because the mean of its divisors is an integer number (9188670).

Almost surely, 2^49618791 is an apocalyptic number.

49618791 is a deficient number, since it is larger than the sum of its proper divisors (23890569).

49618791 is a wasteful number, since it uses less digits than its factorization.

49618791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837742 (or 1837736 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 49618791 is about 7044.0606896874. The cubic root of 49618791 is about 367.4645030271.

The spelling of 49618791 in words is "forty-nine million, six hundred eighteen thousand, seven hundred ninety-one".