19340345449 has 2 divisors, whose sum is σ = 19340345450. Its totient is φ = 19340345448.

The previous prime is 19340345411. The next prime is 19340345467. The reversal of 19340345449 is 94454304391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18860078224 + 480267225 = 137332^2 + 21915^2 .

It is a cyclic number.

It is not a de Polignac number, because 19340345449 - 2¹⁵ = 19340312681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19340345399 and 19340345408.

It is not a weakly prime, because it can be changed into another prime (19340345489) 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 as a sum of consecutive naturals, namely, 9670172724 + 9670172725.

It is an arithmetic number, because the mean of its divisors is an integer number (9670172725).

Almost surely, 2^19340345449 is an apocalyptic number.

It is an amenable number.

19340345449 is a deficient number, since it is larger than the sum of its proper divisors (1).

19340345449 is an equidigital number, since it uses as much as digits as its factorization.

19340345449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 19340345449 in words is "nineteen billion, three hundred forty million, three hundred forty-five thousand, four hundred forty-nine".