18281000452 has 96 divisors (see below), whose sum is σ = 39435475968. Its totient is φ = 7300800000.

The previous prime is 18281000429. The next prime is 18281000459. The reversal of 18281000452 is 25400018281.

It is a super-5 number, since 5×18281000452⁵ (a number of 53 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (18281000459) 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 31 ways as a sum of consecutive naturals, for example, 1073202 + ... + 1090102.

It is an arithmetic number, because the mean of its divisors is an integer number (410786208).

Almost surely, 2^18281000452 is an apocalyptic number.

18281000452 is the 67604-th decagonal number.

It is an amenable number.

18281000452 is an abundant number, since it is smaller than the sum of its proper divisors (21154475516).

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

18281000452 is a wasteful number, since it uses less digits than its factorization.

18281000452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17021 (or 17019 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The spelling of 18281000452 in words is "eighteen billion, two hundred eighty-one million, four hundred fifty-two", and thus it is an aban number.