49649518 has 8 divisors (see below), whose sum is σ = 74601648. Its totient is φ = 24782304.

The previous prime is 49649513. The next prime is 49649543. The reversal of 49649518 is 81594694.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49649513) 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 3 ways as a sum of consecutive naturals, for example, 19746 + ... + 22117.

It is an arithmetic number, because the mean of its divisors is an integer number (9325206).

Almost surely, 2^49649518 is an apocalyptic number.

49649518 is a deficient number, since it is larger than the sum of its proper divisors (24952130).

49649518 is a wasteful number, since it uses less digits than its factorization.

49649518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42458.

The product of its digits is 311040, while the sum is 46.

The square root of 49649518 is about 7046.2414094324. The cubic root of 49649518 is about 367.5403395643.

The spelling of 49649518 in words is "forty-nine million, six hundred forty-nine thousand, five hundred eighteen".