13291137 has 6 divisors (see below), whose sum is σ = 19198322. Its totient is φ = 8860752.

The previous prime is 13291121. The next prime is 13291139. The reversal of 13291137 is 73119231.

It can be written as a sum of positive squares in only one way, i.e., 13024881 + 266256 = 3609^2 + 516^2 .

It is not a de Polignac number, because 13291137 - 2⁴ = 13291121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13291137.

It is not an unprimeable number, because it can be changed into a prime (13291139) 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 5 ways as a sum of consecutive naturals, for example, 738388 + ... + 738405.

Almost surely, 2^13291137 is an apocalyptic number.

It is an amenable number.

13291137 is a deficient number, since it is larger than the sum of its proper divisors (5907185).

13291137 is a wasteful number, since it uses less digits than its factorization.

13291137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476799 (or 1476796 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 13291137 is about 3645.7011671282. The cubic root of 13291137 is about 236.8758095270.

The spelling of 13291137 in words is "thirteen million, two hundred ninety-one thousand, one hundred thirty-seven".