18445896280 has 64 divisors (see below), whose sum is σ = 47470199040. Its totient is φ = 6319254912.

The previous prime is 18445896239. The next prime is 18445896283. The reversal of 18445896280 is 8269854481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18445896283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333567 + ... + 384913.

It is an arithmetic number, because the mean of its divisors is an integer number (741721860).

Almost surely, 2^18445896280 is an apocalyptic number.

18445896280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18445896280 is an abundant number, since it is smaller than the sum of its proper divisors (29024302760).

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

18445896280 is a wasteful number, since it uses less digits than its factorization.

18445896280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52648 (or 52644 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 18445896280 in words is "eighteen billion, four hundred forty-five million, eight hundred ninety-six thousand, two hundred eighty".