18864961248 has 48 divisors (see below), whose sum is σ = 56594885760. Its totient is φ = 5389988736.

The previous prime is 18864961237. The next prime is 18864961249. The reversal of 18864961248 is 84216946881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18864961249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14035758 + ... + 14037101.

It is an arithmetic number, because the mean of its divisors is an integer number (1179060120).

Almost surely, 2^18864961248 is an apocalyptic number.

It is an amenable number.

18864961248 is an abundant number, since it is smaller than the sum of its proper divisors (37729924512).

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

18864961248 is a wasteful number, since it uses less digits than its factorization.

18864961248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28072879 (or 28072871 counting only the distinct ones).

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

The spelling of 18864961248 in words is "eighteen billion, eight hundred sixty-four million, nine hundred sixty-one thousand, two hundred forty-eight".