13811485 has 4 divisors (see below), whose sum is σ = 16573788. Its totient is φ = 11049184.

The previous prime is 13811459. The next prime is 13811489. The reversal of 13811485 is 58411831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4502884 + 9308601 = 2122^2 + 3051^2 .

It is a cyclic number.

It is not a de Polignac number, because 13811485 - 2¹⁵ = 13778717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13811489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381144 + ... + 1381153.

It is an arithmetic number, because the mean of its divisors is an integer number (4143447).

Almost surely, 2^13811485 is an apocalyptic number.

It is an amenable number.

13811485 is a deficient number, since it is larger than the sum of its proper divisors (2762303).

13811485 is an equidigital number, since it uses as much as digits as its factorization.

13811485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762302.

The product of its digits is 3840, while the sum is 31.

The square root of 13811485 is about 3716.3806317437. The cubic root of 13811485 is about 239.9275533649.

The spelling of 13811485 in words is "thirteen million, eight hundred eleven thousand, four hundred eighty-five".