18084977 has 8 divisors (see below), whose sum is σ = 18636072. Its totient is φ = 17539200.

The previous prime is 18084967. The next prime is 18085019. The reversal of 18084977 is 77948081.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 18054001 = 176^2 + 4249^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18084977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18084967) 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, 6203 + ... + 8639.

It is an arithmetic number, because the mean of its divisors is an integer number (2329509).

Almost surely, 2^18084977 is an apocalyptic number.

It is an amenable number.

18084977 is a deficient number, since it is larger than the sum of its proper divisors (551095).

18084977 is a wasteful number, since it uses less digits than its factorization.

18084977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 18084977 is about 4252.6435307935. The cubic root of 18084977 is about 262.4859046097.

The spelling of 18084977 in words is "eighteen million, eighty-four thousand, nine hundred seventy-seven".