13201945 has 8 divisors (see below), whose sum is σ = 16774344. Its totient is φ = 9940224.

The previous prime is 13201943. The next prime is 13201957. The reversal of 13201945 is 54910231.

It can be written as a sum of positive squares in 4 ways, for example, as 7311616 + 5890329 = 2704^2 + 2427^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13201945 - 2¹ = 13201943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13201943) by changing a digit.

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, 77574 + ... + 77743.

It is an arithmetic number, because the mean of its divisors is an integer number (2096793).

Almost surely, 2^13201945 is an apocalyptic number.

It is an amenable number.

13201945 is a deficient number, since it is larger than the sum of its proper divisors (3572399).

13201945 is a wasteful number, since it uses less digits than its factorization.

13201945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155339.

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

The square root of 13201945 is about 3633.4480868729. The cubic root of 13201945 is about 236.3447573006.

The spelling of 13201945 in words is "thirteen million, two hundred one thousand, nine hundred forty-five".