18306041272 has 16 divisors (see below), whose sum is σ = 34333639560. Its totient is φ = 9150404064.

The previous prime is 18306041219. The next prime is 18306041311. The reversal of 18306041272 is 27214060381.

It is a super-2 number, since 2×18306041272² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297178 + ... + 353449.

Almost surely, 2^18306041272 is an apocalyptic number.

It is an amenable number.

18306041272 is a deficient number, since it is larger than the sum of its proper divisors (16027598288).

18306041272 is a wasteful number, since it uses less digits than its factorization.

18306041272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654150 (or 654146 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 18306041272 in words is "eighteen billion, three hundred six million, forty-one thousand, two hundred seventy-two".