13087819 has 2 divisors, whose sum is σ = 13087820. Its totient is φ = 13087818.

The previous prime is 13087783. The next prime is 13087861. The reversal of 13087819 is 91878031.

13087819 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13087819 - 2⁷ = 13087691 is a prime.

It is a super-2 number, since 2×13087819² = 342582012353522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13087519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6543909 + 6543910.

It is an arithmetic number, because the mean of its divisors is an integer number (6543910).

Almost surely, 2^13087819 is an apocalyptic number.

13087819 is a deficient number, since it is larger than the sum of its proper divisors (1).

13087819 is an equidigital number, since it uses as much as digits as its factorization.

13087819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 13087819 is about 3617.7090817256. The cubic root of 13087819 is about 235.6617473006.

The spelling of 13087819 in words is "thirteen million, eighty-seven thousand, eight hundred nineteen".