18082987 has 8 divisors (see below), whose sum is σ = 19550160. Its totient is φ = 16626720.

The previous prime is 18082963. The next prime is 18082993. The reversal of 18082987 is 78928081.

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 18082987 - 2¹¹ = 18080939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18082907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912 + ... + 6082.

It is an arithmetic number, because the mean of its divisors is an integer number (2443770).

Almost surely, 2^18082987 is an apocalyptic number.

18082987 is a deficient number, since it is larger than the sum of its proper divisors (1467173).

18082987 is a wasteful number, since it uses less digits than its factorization.

18082987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 18082987 is about 4252.4095522421. The cubic root of 18082987 is about 262.4762766165.

The spelling of 18082987 in words is "eighteen million, eighty-two thousand, nine hundred eighty-seven".