18768117 has 8 divisors (see below), whose sum is σ = 25072096. Its totient is φ = 12488112.

The previous prime is 18768103. The next prime is 18768137. The reversal of 18768117 is 71186781.

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

It is not a de Polignac number, because 18768117 - 2¹⁹ = 18243829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18768137) 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 7 ways as a sum of consecutive naturals, for example, 4078 + ... + 7359.

It is an arithmetic number, because the mean of its divisors is an integer number (3134012).

Almost surely, 2^18768117 is an apocalyptic number.

It is an amenable number.

18768117 is a deficient number, since it is larger than the sum of its proper divisors (6303979).

18768117 is a wasteful number, since it uses less digits than its factorization.

18768117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11987.

The product of its digits is 18816, while the sum is 39.

The square root of 18768117 is about 4332.2184847951. The cubic root of 18768117 is about 265.7501800196.

The spelling of 18768117 in words is "eighteen million, seven hundred sixty-eight thousand, one hundred seventeen".