13818461 has 4 divisors (see below), whose sum is σ = 13838400. Its totient is φ = 13798524.

The previous prime is 13818457. The next prime is 13818473. The reversal of 13818461 is 16481831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13818461 - 2² = 13818457 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 (13818401) 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, 8891 + ... + 10328.

It is an arithmetic number, because the mean of its divisors is an integer number (3459600).

Almost surely, 2^13818461 is an apocalyptic number.

It is an amenable number.

13818461 is a deficient number, since it is larger than the sum of its proper divisors (19939).

13818461 is an equidigital number, since it uses as much as digits as its factorization.

13818461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19938.

The product of its digits is 4608, while the sum is 32.

The square root of 13818461 is about 3717.3190608287. The cubic root of 13818461 is about 239.9679413197.

The spelling of 13818461 in words is "thirteen million, eight hundred eighteen thousand, four hundred sixty-one".