13163645 has 16 divisors (see below), whose sum is σ = 17368128. Its totient is φ = 9498240.

The previous prime is 13163641. The next prime is 13163653. The reversal of 13163645 is 54636131.

It is a happy number.

It is not a de Polignac number, because 13163645 - 2² = 13163641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6662 + ... + 8408.

It is an arithmetic number, because the mean of its divisors is an integer number (1085508).

Almost surely, 2^13163645 is an apocalyptic number.

It is an amenable number.

13163645 is a deficient number, since it is larger than the sum of its proper divisors (4204483).

13163645 is a wasteful number, since it uses less digits than its factorization.

13163645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900.

The product of its digits is 6480, while the sum is 29.

The square root of 13163645 is about 3628.1737830484. The cubic root of 13163645 is about 236.1159836390.

Adding to 13163645 its reverse (54636131), we get a palindrome (67799776).

The spelling of 13163645 in words is "thirteen million, one hundred sixty-three thousand, six hundred forty-five".