13730181 has 4 divisors (see below), whose sum is σ = 18306912. Its totient is φ = 9153452.

The previous prime is 13730177. The next prime is 13730183. The reversal of 13730181 is 18103731.

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 13730181 - 2² = 13730177 is a prime.

It is a super-2 number, since 2×13730181² = 377035740585522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13730183) 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, 2288361 + ... + 2288366.

It is an arithmetic number, because the mean of its divisors is an integer number (4576728).

Almost surely, 2^13730181 is an apocalyptic number.

It is an amenable number.

13730181 is a deficient number, since it is larger than the sum of its proper divisors (4576731).

13730181 is an equidigital number, since it uses as much as digits as its factorization.

13730181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576730.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 13730181 is about 3705.4258864535. The cubic root of 13730181 is about 239.4558330812.

The spelling of 13730181 in words is "thirteen million, seven hundred thirty thousand, one hundred eighty-one".