13538534 has 8 divisors (see below), whose sum is σ = 21008160. Its totient is φ = 6535816.

The previous prime is 13538533. The next prime is 13538543. The reversal of 13538534 is 43583531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13538534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13538531) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 116654 + ... + 116769.

It is an arithmetic number, because the mean of its divisors is an integer number (2626020).

Almost surely, 2^13538534 is an apocalyptic number.

13538534 is a deficient number, since it is larger than the sum of its proper divisors (7469626).

13538534 is a wasteful number, since it uses less digits than its factorization.

13538534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233454.

The product of its digits is 21600, while the sum is 32.

The square root of 13538534 is about 3679.4746907677. The cubic root of 13538534 is about 238.3364941088.

The spelling of 13538534 in words is "thirteen million, five hundred thirty-eight thousand, five hundred thirty-four".