13149205 has 4 divisors (see below), whose sum is σ = 15779052. Its totient is φ = 10519360.

The previous prime is 13149203. The next prime is 13149229. The reversal of 13149205 is 50294131.

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 5788836 + 7360369 = 2406^2 + 2713^2 .

It is not a de Polignac number, because 13149205 - 2¹ = 13149203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13149205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149203) 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, 1314916 + ... + 1314925.

It is an arithmetic number, because the mean of its divisors is an integer number (3944763).

Almost surely, 2^13149205 is an apocalyptic number.

It is an amenable number.

13149205 is a deficient number, since it is larger than the sum of its proper divisors (2629847).

13149205 is an equidigital number, since it uses as much as digits as its factorization.

13149205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629846.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 13149205 is about 3626.1832551596. The cubic root of 13149205 is about 236.0296154063.

The spelling of 13149205 in words is "thirteen million, one hundred forty-nine thousand, two hundred five".