49789021318 has 16 divisors (see below), whose sum is σ = 75198505824. Its totient is φ = 24722942400.

The previous prime is 49789021309. The next prime is 49789021319. The reversal of 49789021318 is 81312098794.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49789021319) 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, 1204896 + ... + 1245532.

It is an arithmetic number, because the mean of its divisors is an integer number (4699906614).

Almost surely, 2^49789021318 is an apocalyptic number.

49789021318 is a deficient number, since it is larger than the sum of its proper divisors (25409484506).

49789021318 is a wasteful number, since it uses less digits than its factorization.

49789021318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44847.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 49789021318 in words is "forty-nine billion, seven hundred eighty-nine million, twenty-one thousand, three hundred eighteen".