18022877 has 8 divisors (see below), whose sum is σ = 18391680. Its totient is φ = 17656560.

The previous prime is 18022867. The next prime is 18022883. The reversal of 18022877 is 77822081.

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

It is a cyclic number.

It is not a de Polignac number, because 18022877 - 2¹⁶ = 17957341 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 (18022817) 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 7 ways as a sum of consecutive naturals, for example, 21488 + ... + 22310.

It is an arithmetic number, because the mean of its divisors is an integer number (2298960).

Almost surely, 2^18022877 is an apocalyptic number.

It is an amenable number.

18022877 is a deficient number, since it is larger than the sum of its proper divisors (368803).

18022877 is an equidigital number, since it uses as much as digits as its factorization.

18022877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 18022877 is about 4245.3359113267. The cubic root of 18022877 is about 262.1851196414.

The spelling of 18022877 in words is "eighteen million, twenty-two thousand, eight hundred seventy-seven".