18117677 has 4 divisors (see below), whose sum is σ = 18248160. Its totient is φ = 17987196.

The previous prime is 18117667. The next prime is 18117691. The reversal of 18117677 is 77671181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18117677 - 2¹⁰ = 18116653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18117677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18117647) by changing a digit.

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, 65033 + ... + 65310.

It is an arithmetic number, because the mean of its divisors is an integer number (4562040).

Almost surely, 2^18117677 is an apocalyptic number.

It is an amenable number.

18117677 is a deficient number, since it is larger than the sum of its proper divisors (130483).

18117677 is a wasteful number, since it uses less digits than its factorization.

18117677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130482.

The product of its digits is 16464, while the sum is 38.

The square root of 18117677 is about 4256.4864618603. The cubic root of 18117677 is about 262.6440122854.

The spelling of 18117677 in words is "eighteen million, one hundred seventeen thousand, six hundred seventy-seven".