18563134 has 4 divisors (see below), whose sum is σ = 27844704. Its totient is φ = 9281566.

The previous prime is 18563131. The next prime is 18563137. The reversal of 18563134 is 43136581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43136581 = 2069 ⋅20849.

It is an interprime number because it is at equal distance from previous prime (18563131) and next prime (18563137).

It is a junction number, because it is equal to n+sod(n) for n = 18563096 and 18563105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18563131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4640782 + ... + 4640785.

It is an arithmetic number, because the mean of its divisors is an integer number (6961176).

Almost surely, 2^18563134 is an apocalyptic number.

18563134 is a deficient number, since it is larger than the sum of its proper divisors (9281570).

18563134 is an equidigital number, since it uses as much as digits as its factorization.

18563134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9281569.

The product of its digits is 8640, while the sum is 31.

The square root of 18563134 is about 4308.4955610979. The cubic root of 18563134 is about 264.7791395809.

The spelling of 18563134 in words is "eighteen million, five hundred sixty-three thousand, one hundred thirty-four".