18036877 has 2 divisors, whose sum is σ = 18036878. Its totient is φ = 18036876.

The previous prime is 18036857. The next prime is 18036923. The reversal of 18036877 is 77863081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15768841 + 2268036 = 3971^2 + 1506^2 .

It is an emirp because it is prime and its reverse (77863081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18036877 - 2¹⁹ = 17512589 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18036817) 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 as a sum of consecutive naturals, namely, 9018438 + 9018439.

It is an arithmetic number, because the mean of its divisors is an integer number (9018439).

Almost surely, 2^18036877 is an apocalyptic number.

It is an amenable number.

18036877 is a deficient number, since it is larger than the sum of its proper divisors (1).

18036877 is an equidigital number, since it uses as much as digits as its factorization.

18036877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 18036877 is about 4246.9844595901. The cubic root of 18036877 is about 262.2529897094.

The spelling of 18036877 in words is "eighteen million, thirty-six thousand, eight hundred seventy-seven".