1115678648 has 24 divisors (see below), whose sum is σ = 2433432600. Its totient is φ = 478147824.

The previous prime is 1115678639. The next prime is 1115678659. The reversal of 1115678648 is 8468765111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1422668 + ... + 1423451.

It is an arithmetic number, because the mean of its divisors is an integer number (101393025).

Almost surely, 2^1115678648 is an apocalyptic number.

It is an amenable number.

1115678648 is an abundant number, since it is smaller than the sum of its proper divisors (1317753952).

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

1115678648 is a wasteful number, since it uses less digits than its factorization.

1115678648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846139 (or 2846128 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The square root of 1115678648 is about 33401.7761204401. The cubic root of 1115678648 is about 1037.1614682606.

The spelling of 1115678648 in words is "one billion, one hundred fifteen million, six hundred seventy-eight thousand, six hundred forty-eight".