15418884648 has 32 divisors (see below), whose sum is σ = 38760190560. Its totient is φ = 5111231040.

The previous prime is 15418884643. The next prime is 15418884671. The reversal of 15418884648 is 84648881451.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (15418884643) 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, 1770390 + ... + 1779077.

It is an arithmetic number, because the mean of its divisors is an integer number (1211255955).

Almost surely, 2^15418884648 is an apocalyptic number.

It is an amenable number.

15418884648 is an abundant number, since it is smaller than the sum of its proper divisors (23341305912).

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

15418884648 is a wasteful number, since it uses less digits than its factorization.

15418884648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549657 (or 3549653 counting only the distinct ones).

The product of its digits is 7864320, while the sum is 57.

The spelling of 15418884648 in words is "fifteen billion, four hundred eighteen million, eight hundred eighty-four thousand, six hundred forty-eight".