18136677 has 16 divisors (see below), whose sum is σ = 26118848. Its totient is φ = 11128320.

The previous prime is 18136667. The next prime is 18136693. The reversal of 18136677 is 77663181.

It is not a de Polignac number, because 18136677 - 2⁸ = 18136421 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18136667) 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 15 ways as a sum of consecutive naturals, for example, 25902 + ... + 26592.

It is an arithmetic number, because the mean of its divisors is an integer number (1632428).

Almost surely, 2^18136677 is an apocalyptic number.

It is an amenable number.

18136677 is a deficient number, since it is larger than the sum of its proper divisors (7982171).

18136677 is a wasteful number, since it uses less digits than its factorization.

18136677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its digits is 42336, while the sum is 39.

The square root of 18136677 is about 4258.7177647738. The cubic root of 18136677 is about 262.7357917637.

The spelling of 18136677 in words is "eighteen million, one hundred thirty-six thousand, six hundred seventy-seven".