49518418 has 4 divisors (see below), whose sum is σ = 74277630. Its totient is φ = 24759208.

The previous prime is 49518323. The next prime is 49518419. The reversal of 49518418 is 81481594.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28697449 + 20820969 = 5357^2 + 4563^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (49518419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12379603 + ... + 12379606.

Almost surely, 2^49518418 is an apocalyptic number.

49518418 is a deficient number, since it is larger than the sum of its proper divisors (24759212).

49518418 is a wasteful number, since it uses less digits than its factorization.

49518418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24759211.

The product of its digits is 46080, while the sum is 40.

The square root of 49518418 is about 7036.9324282673. The cubic root of 49518418 is about 367.2165565526.

The spelling of 49518418 in words is "forty-nine million, five hundred eighteen thousand, four hundred eighteen".