13813634 has 4 divisors (see below), whose sum is σ = 20720454. Its totient is φ = 6906816.

The previous prime is 13813577. The next prime is 13813637. The reversal of 13813634 is 43631831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43631831 = 41 ⋅1064191.

It can be written as a sum of positive squares in only one way, i.e., 13344409 + 469225 = 3653^2 + 685^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13813597 and 13813606.

It is not an unprimeable number, because it can be changed into a prime (13813637) 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, 3453407 + ... + 3453410.

Almost surely, 2^13813634 is an apocalyptic number.

13813634 is a deficient number, since it is larger than the sum of its proper divisors (6906820).

13813634 is an equidigital number, since it uses as much as digits as its factorization.

13813634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6906819.

The product of its digits is 5184, while the sum is 29.

The square root of 13813634 is about 3716.6697458881. The cubic root of 13813634 is about 239.9399965736.

The spelling of 13813634 in words is "thirteen million, eight hundred thirteen thousand, six hundred thirty-four".