18642063 has 16 divisors (see below), whose sum is σ = 27265536. Its totient is φ = 11235840.

The previous prime is 18642037. The next prime is 18642101. The reversal of 18642063 is 36024681.

It is not a de Polignac number, because 18642063 - 2⁶ = 18641999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18642063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18642163) 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 15 ways as a sum of consecutive naturals, for example, 4906 + ... + 7832.

It is an arithmetic number, because the mean of its divisors is an integer number (1704096).

Almost surely, 2^18642063 is an apocalyptic number.

18642063 is a deficient number, since it is larger than the sum of its proper divisors (8623473).

18642063 is a wasteful number, since it uses less digits than its factorization.

18642063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 18642063 is about 4317.6455389483. The cubic root of 18642063 is about 265.1538823825.

The spelling of 18642063 in words is "eighteen million, six hundred forty-two thousand, sixty-three".