18528280896 has 56 divisors (see below), whose sum is σ = 49335070240. Its totient is φ = 6136745472.

The previous prime is 18528280877. The next prime is 18528280919. The reversal of 18528280896 is 69808282581.

It is a super-2 number, since 2×18528280896² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277186 + ... + 337473.

Almost surely, 2^18528280896 is an apocalyptic number.

18528280896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18528280896 is an abundant number, since it is smaller than the sum of its proper divisors (30806789344).

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

18528280896 is a wasteful number, since it uses less digits than its factorization.

18528280896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614831 (or 614821 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 57.

The spelling of 18528280896 in words is "eighteen billion, five hundred twenty-eight million, two hundred eighty thousand, eight hundred ninety-six".