18241240473 has 16 divisors (see below), whose sum is σ = 27092146560. Its totient is φ = 12130188048.

The previous prime is 18241240471. The next prime is 18241240477. The reversal of 18241240473 is 37404214281.

18241240473 is a `hidden beast` number, since 1 + 8 + 241 + 2 + 404 + 7 + 3 = 666.

It is not a de Polignac number, because 18241240473 - 2¹ = 18241240471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18241240471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840165 + ... + 861602.

It is an arithmetic number, because the mean of its divisors is an integer number (1693259160).

Almost surely, 2^18241240473 is an apocalyptic number.

It is an amenable number.

18241240473 is a deficient number, since it is larger than the sum of its proper divisors (8850906087).

18241240473 is a wasteful number, since it uses less digits than its factorization.

18241240473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702173 (or 1702167 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 18241240473 in words is "eighteen billion, two hundred forty-one million, two hundred forty thousand, four hundred seventy-three".