49981118 has 8 divisors (see below), whose sum is σ = 81787320. Its totient is φ = 22718680.

The previous prime is 49981111. The next prime is 49981171. The reversal of 49981118 is 81118994.

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

It is a super-2 number, since 2×49981118² = 4996224313059848, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49981111) 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, 1135913 + ... + 1135956.

It is an arithmetic number, because the mean of its divisors is an integer number (10223415).

Almost surely, 2^49981118 is an apocalyptic number.

49981118 is a deficient number, since it is larger than the sum of its proper divisors (31806202).

49981118 is a wasteful number, since it uses less digits than its factorization.

49981118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271882.

The product of its digits is 20736, while the sum is 41.

The square root of 49981118 is about 7069.7325267651. The cubic root of 49981118 is about 368.3567694367.

It can be divided in two parts, 4998 and 1118, that added together give a palindrome (6116).

The spelling of 49981118 in words is "forty-nine million, nine hundred eighty-one thousand, one hundred eighteen".