18122963 has 4 divisors (see below), whose sum is σ = 18378288. Its totient is φ = 17867640.

The previous prime is 18122947. The next prime is 18122989. The reversal of 18122963 is 36922181.

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

It is a cyclic number.

It is not a de Polignac number, because 18122963 - 2⁴ = 18122947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18125963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127556 + ... + 127697.

It is an arithmetic number, because the mean of its divisors is an integer number (4594572).

Almost surely, 2^18122963 is an apocalyptic number.

18122963 is a deficient number, since it is larger than the sum of its proper divisors (255325).

18122963 is an equidigital number, since it uses as much as digits as its factorization.

18122963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255324.

The product of its digits is 5184, while the sum is 32.

The square root of 18122963 is about 4257.1073512422. The cubic root of 18122963 is about 262.6695527424.

The spelling of 18122963 in words is "eighteen million, one hundred twenty-two thousand, nine hundred sixty-three".