18500168349 has 48 divisors (see below), whose sum is σ = 32074660800. Its totient is φ = 10151059968.

The previous prime is 18500168293. The next prime is 18500168431. The reversal of 18500168349 is 94386100581.

18500168349 is a `hidden beast` number, since 18 + 500 + 16 + 83 + 49 = 666.

It is not a de Polignac number, because 18500168349 - 2¹⁶ = 18500102813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18500168249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 206979 + ... + 282560.

It is an arithmetic number, because the mean of its divisors is an integer number (668222100).

Almost surely, 2^18500168349 is an apocalyptic number.

18500168349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18500168349 is a deficient number, since it is larger than the sum of its proper divisors (13574492451).

18500168349 is a wasteful number, since it uses less digits than its factorization.

18500168349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489594 (or 489591 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 18500168349 in words is "eighteen billion, five hundred million, one hundred sixty-eight thousand, three hundred forty-nine".