18984485 has 8 divisors (see below), whose sum is σ = 24533880. Its totient is φ = 14019264.

The previous prime is 18984479. The next prime is 18984521. The reversal of 18984485 is 58448981.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 743044 + 18241441 = 862^2 + 4271^2 .

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 18984485 - 2¹² = 18980389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 145970 + ... + 146099.

It is an arithmetic number, because the mean of its divisors is an integer number (3066735).

Almost surely, 2^18984485 is an apocalyptic number.

It is an amenable number.

18984485 is a deficient number, since it is larger than the sum of its proper divisors (5549395).

18984485 is a wasteful number, since it uses less digits than its factorization.

18984485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292087.

The product of its digits is 368640, while the sum is 47.

The square root of 18984485 is about 4357.1188875219. The cubic root of 18984485 is about 266.7675130730.

The spelling of 18984485 in words is "eighteen million, nine hundred eighty-four thousand, four hundred eighty-five".