13538465 has 8 divisors (see below), whose sum is σ = 16317288. Its totient is φ = 10783360.

The previous prime is 13538453. The next prime is 13538471. The reversal of 13538465 is 56483531.

It can be written as a sum of positive squares in 4 ways, for example, as 113569 + 13424896 = 337^2 + 3664^2 .

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

It is not a de Polignac number, because 13538465 - 2¹⁰ = 13537441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4646 + ... + 6975.

It is an arithmetic number, because the mean of its divisors is an integer number (2039661).

Almost surely, 2^13538465 is an apocalyptic number.

It is an amenable number.

13538465 is a deficient number, since it is larger than the sum of its proper divisors (2778823).

13538465 is a wasteful number, since it uses less digits than its factorization.

13538465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11859.

The product of its digits is 43200, while the sum is 35.

The square root of 13538465 is about 3679.4653144173. The cubic root of 13538465 is about 238.3360892091.

The spelling of 13538465 in words is "thirteen million, five hundred thirty-eight thousand, four hundred sixty-five".