49891138318 has 8 divisors (see below), whose sum is σ = 85527665712. Its totient is φ = 21381916416.

The previous prime is 49891138313. The next prime is 49891138327. The reversal of 49891138318 is 81383119894.

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 (49891138313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781826355 + ... + 1781826382.

It is an arithmetic number, because the mean of its divisors is an integer number (10690958214).

Almost surely, 2^49891138318 is an apocalyptic number.

49891138318 is a deficient number, since it is larger than the sum of its proper divisors (35636527394).

49891138318 is a wasteful number, since it uses less digits than its factorization.

49891138318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563652746.

The product of its digits is 1492992, while the sum is 55.

The spelling of 49891138318 in words is "forty-nine billion, eight hundred ninety-one million, one hundred thirty-eight thousand, three hundred eighteen".