13118573 has 4 divisors (see below), whose sum is σ = 14127708. Its totient is φ = 12109440.

The previous prime is 13118563. The next prime is 13118597. The reversal of 13118573 is 37581131.

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 3396649 + 9721924 = 1843^2 + 3118^2 .

It is a cyclic number.

It is not a de Polignac number, because 13118573 - 2⁸ = 13118317 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 (13118513) 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 3 ways as a sum of consecutive naturals, for example, 504548 + ... + 504573.

It is an arithmetic number, because the mean of its divisors is an integer number (3531927).

Almost surely, 2^13118573 is an apocalyptic number.

13118573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13118573 is a deficient number, since it is larger than the sum of its proper divisors (1009135).

13118573 is a wasteful number, since it uses less digits than its factorization.

13118573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009134.

The product of its digits is 2520, while the sum is 29.

The square root of 13118573 is about 3621.9570676638. The cubic root of 13118573 is about 235.8461903559.

The spelling of 13118573 in words is "thirteen million, one hundred eighteen thousand, five hundred seventy-three".