18273000481 has 8 divisors (see below), whose sum is σ = 18313737728. Its totient is φ = 18232290000.

The previous prime is 18273000479. The next prime is 18273000503. The reversal of 18273000481 is 18400037281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18273000481 - 2¹ = 18273000479 is a prime.

It is a super-2 number, since 2×18273000481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18273003481) 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, 1992256 + ... + 2001406.

It is an arithmetic number, because the mean of its divisors is an integer number (2289217216).

Almost surely, 2^18273000481 is an apocalyptic number.

18273000481 is the 72256-th centered heptagonal number.

It is an amenable number.

18273000481 is a deficient number, since it is larger than the sum of its proper divisors (40737247).

18273000481 is an equidigital number, since it uses as much as digits as its factorization.

18273000481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13383.

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 18273000481 in words is "eighteen billion, two hundred seventy-three million, four hundred eighty-one", and thus it is an aban number.