13449138888 has 32 divisors (see below), whose sum is σ = 33722638560. Its totient is φ = 4469740800.

The previous prime is 13449138881. The next prime is 13449138943. The reversal of 13449138888 is 88883194431.

It is not an unprimeable number, because it can be changed into a prime (13449138881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823338 + ... + 839513.

It is an arithmetic number, because the mean of its divisors is an integer number (1053832455).

Almost surely, 2^13449138888 is an apocalyptic number.

It is an amenable number.

13449138888 is an abundant number, since it is smaller than the sum of its proper divisors (20273499672).

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

13449138888 is a wasteful number, since it uses less digits than its factorization.

13449138888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663197 (or 1663193 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 57.

The spelling of 13449138888 in words is "thirteen billion, four hundred forty-nine million, one hundred thirty-eight thousand, eight hundred eighty-eight".