18012562 has 16 divisors (see below), whose sum is σ = 28344960. Its totient is φ = 8574768.

The previous prime is 18012559. The next prime is 18012569. The reversal of 18012562 is 26521081.

It is not an unprimeable number, because it can be changed into a prime (18012569) 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, 889 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (1771560).

Almost surely, 2^18012562 is an apocalyptic number.

18012562 is a deficient number, since it is larger than the sum of its proper divisors (10332398).

18012562 is a wasteful number, since it uses less digits than its factorization.

18012562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18012562 is about 4244.1208748102. The cubic root of 18012562 is about 262.1350914538.

The spelling of 18012562 in words is "eighteen million, twelve thousand, five hundred sixty-two".