13020491819 has 2 divisors, whose sum is σ = 13020491820. Its totient is φ = 13020491818.

The previous prime is 13020491747. The next prime is 13020491849. The reversal of 13020491819 is 91819402031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13020491819 is a prime.

It is a super-2 number, since 2×13020491819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13020491849) 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, 6510245909 + 6510245910.

It is an arithmetic number, because the mean of its divisors is an integer number (6510245910).

Almost surely, 2^13020491819 is an apocalyptic number.

13020491819 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020491819 is an equidigital number, since it uses as much as digits as its factorization.

13020491819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 13020491819 in words is "thirteen billion, twenty million, four hundred ninety-one thousand, eight hundred nineteen".