18062987 has 4 divisors (see below), whose sum is σ = 18645696. Its totient is φ = 17480280.

The previous prime is 18062971. The next prime is 18063011. The reversal of 18062987 is 78926081.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18062987 - 2⁴ = 18062971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18062927) 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 3 ways as a sum of consecutive naturals, for example, 291308 + ... + 291369.

It is an arithmetic number, because the mean of its divisors is an integer number (4661424).

Almost surely, 2^18062987 is an apocalyptic number.

18062987 is a deficient number, since it is larger than the sum of its proper divisors (582709).

18062987 is an equidigital number, since it uses as much as digits as its factorization.

18062987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582708.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 18062987 is about 4250.0572937315. The cubic root of 18062987 is about 262.3794736184.

The spelling of 18062987 in words is "eighteen million, sixty-two thousand, nine hundred eighty-seven".