48919486638 has 24 divisors (see below), whose sum is σ = 107542013544. Its totient is φ = 14824086640.

The previous prime is 48919486631. The next prime is 48919486661. The reversal of 48919486638 is 83668491984.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48919486631) 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 11 ways as a sum of consecutive naturals, for example, 33690381 + ... + 33691832.

It is an arithmetic number, because the mean of its divisors is an integer number (4480917231).

Almost surely, 2^48919486638 is an apocalyptic number.

48919486638 is an abundant number, since it is smaller than the sum of its proper divisors (58622526906).

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

48919486638 is a wasteful number, since it uses less digits than its factorization.

48919486638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67382240 (or 67382229 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 66.

The spelling of 48919486638 in words is "forty-eight billion, nine hundred nineteen million, four hundred eighty-six thousand, six hundred thirty-eight".