49931931854 has 16 divisors (see below), whose sum is σ = 90632750688. Its totient is φ = 20140611072.

The previous prime is 49931931793. The next prime is 49931931859. The reversal of 49931931854 is 45813913994.

It is a self number, because there is not a number n which added to its sum of digits gives 49931931854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49931931859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104898779 + ... + 104899254.

It is an arithmetic number, because the mean of its divisors is an integer number (5664546918).

Almost surely, 2^49931931854 is an apocalyptic number.

49931931854 is a deficient number, since it is larger than the sum of its proper divisors (40700818834).

49931931854 is a wasteful number, since it uses less digits than its factorization.

49931931854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209798059.

The product of its digits is 4199040, while the sum is 56.

The spelling of 49931931854 in words is "forty-nine billion, nine hundred thirty-one million, nine hundred thirty-one thousand, eight hundred fifty-four".