13543834 has 4 divisors (see below), whose sum is σ = 20315754. Its totient is φ = 6771916.

The previous prime is 13543811. The next prime is 13543843. The reversal of 13543834 is 43834531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43834531 = 13 ⋅3371887.

It can be written as a sum of positive squares in only one way, i.e., 9320809 + 4223025 = 3053^2 + 2055^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13543796 and 13543805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3385957 + ... + 3385960.

Almost surely, 2^13543834 is an apocalyptic number.

13543834 is a deficient number, since it is larger than the sum of its proper divisors (6771920).

13543834 is an equidigital number, since it uses as much as digits as its factorization.

13543834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771919.

The product of its digits is 17280, while the sum is 31.

The square root of 13543834 is about 3680.1948317990. The cubic root of 13543834 is about 238.3675909917.

The spelling of 13543834 in words is "thirteen million, five hundred forty-three thousand, eight hundred thirty-four".