18860948544 has 112 divisors (see below), whose sum is σ = 51967912320. Its totient is φ = 6029721600.

The previous prime is 18860948531. The next prime is 18860948549. The reversal of 18860948544 is 44584906881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18860948549) 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 15 ways as a sum of consecutive naturals, for example, 829552 + ... + 851984.

Almost surely, 2^18860948544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18860948544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25983956160).

18860948544 is an abundant number, since it is smaller than the sum of its proper divisors (33106963776).

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

18860948544 is a wasteful number, since it uses less digits than its factorization.

18860948544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22628 (or 22618 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 57.

The spelling of 18860948544 in words is "eighteen billion, eight hundred sixty million, nine hundred forty-eight thousand, five hundred forty-four".