13201918 has 16 divisors (see below), whose sum is σ = 20457360. Its totient is φ = 6385600.

The previous prime is 13201913. The next prime is 13201919. The reversal of 13201918 is 81910231.

It is a junction number, because it is equal to n+sod(n) for n = 13201892 and 13201901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10128 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (1278585).

Almost surely, 2^13201918 is an apocalyptic number.

13201918 is a deficient number, since it is larger than the sum of its proper divisors (7255442).

13201918 is a wasteful number, since it uses less digits than its factorization.

13201918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13201918 is about 3633.4443713920. Note that the first 3 decimals coincide. The cubic root of 13201918 is about 236.3445961801.

The spelling of 13201918 in words is "thirteen million, two hundred one thousand, nine hundred eighteen".