784349480819 has 2 divisors, whose sum is σ = 784349480820. Its totient is φ = 784349480818.

The previous prime is 784349480777. The next prime is 784349480821. The reversal of 784349480819 is 918084943487.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-784349480819 is a prime.

It is a super-2 number, since 2×784349480819² (a number of 25 digits) contains 22 as substring.

Together with 784349480821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (784349480879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392174740409 + 392174740410.

It is an arithmetic number, because the mean of its divisors is an integer number (392174740410).

Almost surely, 2^784349480819 is an apocalyptic number.

784349480819 is a deficient number, since it is larger than the sum of its proper divisors (1).

784349480819 is an equidigital number, since it uses as much as digits as its factorization.

784349480819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55738368, while the sum is 65.

The spelling of 784349480819 in words is "seven hundred eighty-four billion, three hundred forty-nine million, four hundred eighty thousand, eight hundred nineteen".