18689061 has 8 divisors (see below), whose sum is σ = 24940224. Its totient is φ = 12448640.

The previous prime is 18689059. The next prime is 18689081. The reversal of 18689061 is 16098681.

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 18689061 - 2¹ = 18689059 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18689051) 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, 3256 + ... + 6926.

It is an arithmetic number, because the mean of its divisors is an integer number (3117528).

Almost surely, 2^18689061 is an apocalyptic number.

It is an amenable number.

18689061 is a deficient number, since it is larger than the sum of its proper divisors (6251163).

18689061 is a wasteful number, since it uses less digits than its factorization.

18689061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 18689061 is about 4323.0846625991. The cubic root of 18689061 is about 265.3765194822.

The spelling of 18689061 in words is "eighteen million, six hundred eighty-nine thousand, sixty-one".