49687194018 has 32 divisors (see below), whose sum is σ = 123895342080. Its totient is φ = 12905764560.

The previous prime is 49687193999. The next prime is 49687194043. The reversal of 49687194018 is 81049178694.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53773558 + ... + 53774481.

It is an arithmetic number, because the mean of its divisors is an integer number (3871729440).

Almost surely, 2^49687194018 is an apocalyptic number.

49687194018 is an abundant number, since it is smaller than the sum of its proper divisors (74208148062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49687194018 is a wasteful number, since it uses less digits than its factorization.

49687194018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107548062.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 49687194018 in words is "forty-nine billion, six hundred eighty-seven million, one hundred ninety-four thousand, eighteen".