13138473 has 4 divisors (see below), whose sum is σ = 17517968. Its totient is φ = 8758980.

The previous prime is 13138471. The next prime is 13138487. The reversal of 13138473 is 37483131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13138473 - 2¹ = 13138471 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13138473.

It is not an unprimeable number, because it can be changed into a prime (13138471) 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, 2189743 + ... + 2189748.

It is an arithmetic number, because the mean of its divisors is an integer number (4379492).

Almost surely, 2^13138473 is an apocalyptic number.

It is an amenable number.

13138473 is a deficient number, since it is larger than the sum of its proper divisors (4379495).

13138473 is an equidigital number, since it uses as much as digits as its factorization.

13138473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379494.

The product of its digits is 6048, while the sum is 30.

The square root of 13138473 is about 3624.7031602602. The cubic root of 13138473 is about 235.9653844183.

The spelling of 13138473 in words is "thirteen million, one hundred thirty-eight thousand, four hundred seventy-three".