13091849 has 2 divisors, whose sum is σ = 13091850. Its totient is φ = 13091848.

The previous prime is 13091831. The next prime is 13091873. The reversal of 13091849 is 94819031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 6538249 = 2560^2 + 2557^2 .

It is an emirp because it is prime and its reverse (94819031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13091849 - 2⁸ = 13091593 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a nialpdrome in base 11.

It is not a weakly prime, because it can be changed into another prime (13091809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6545924 + 6545925.

It is an arithmetic number, because the mean of its divisors is an integer number (6545925).

Almost surely, 2^13091849 is an apocalyptic number.

It is an amenable number.

13091849 is a deficient number, since it is larger than the sum of its proper divisors (1).

13091849 is an equidigital number, since it uses as much as digits as its factorization.

13091849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 13091849 is about 3618.2660211764. The cubic root of 13091849 is about 235.6859331327.

The spelling of 13091849 in words is "thirteen million, ninety-one thousand, eight hundred forty-nine".