18148687 has 2 divisors, whose sum is σ = 18148688. Its totient is φ = 18148686.

The previous prime is 18148661. The next prime is 18148717. The reversal of 18148687 is 78684181.

It is a weak prime.

It is an emirp because it is prime and its reverse (78684181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18148687 - 2¹⁵ = 18115919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18148607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9074343 + 9074344.

It is an arithmetic number, because the mean of its divisors is an integer number (9074344).

Almost surely, 2^18148687 is an apocalyptic number.

18148687 is a deficient number, since it is larger than the sum of its proper divisors (1).

18148687 is an equidigital number, since it uses as much as digits as its factorization.

18148687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 43.

The square root of 18148687 is about 4260.1275802492. The cubic root of 18148687 is about 262.7937729953.

It can be divided in two parts, 1814 and 8687, that added together give a palindrome (10501).

The spelling of 18148687 in words is "eighteen million, one hundred forty-eight thousand, six hundred eighty-seven".