18036582 has 16 divisors (see below), whose sum is σ = 36175872. Its totient is φ = 5995080.

The previous prime is 18036581. The next prime is 18036583. The reversal of 18036582 is 28563081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18036581) and next prime (18036583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18036581) 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, 1894 + ... + 6297.

It is an arithmetic number, because the mean of its divisors is an integer number (2260992).

Almost surely, 2^18036582 is an apocalyptic number.

18036582 is an abundant number, since it is smaller than the sum of its proper divisors (18139290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18036582 is a wasteful number, since it uses less digits than its factorization.

18036582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 18036582 is about 4246.9497289231. The cubic root of 18036582 is about 262.2515599523.

It can be divided in two parts, 1803 and 6582, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 18036582 in words is "eighteen million, thirty-six thousand, five hundred eighty-two".