18112963 has 4 divisors (see below), whose sum is σ = 19759608. Its totient is φ = 16466320.

The previous prime is 18112957. The next prime is 18112993. The reversal of 18112963 is 36921181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36921181 = 11 ⋅3356471.

It is a cyclic number.

It is not a de Polignac number, because 18112963 - 2⁵ = 18112931 is a prime.

It is a super-4 number, since 4×18112963⁴ (a number of 30 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18112993) 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, 823306 + ... + 823327.

It is an arithmetic number, because the mean of its divisors is an integer number (4939902).

Almost surely, 2^18112963 is an apocalyptic number.

18112963 is a deficient number, since it is larger than the sum of its proper divisors (1646645).

18112963 is a wasteful number, since it uses less digits than its factorization.

18112963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646644.

The product of its digits is 2592, while the sum is 31.

The square root of 18112963 is about 4255.9326827383. The cubic root of 18112963 is about 262.6212313798.

It can be divided in two parts, 1811 and 2963, that added together give a palindrome (4774).

The spelling of 18112963 in words is "eighteen million, one hundred twelve thousand, nine hundred sixty-three".