19546500349 has 2 divisors, whose sum is σ = 19546500350. Its totient is φ = 19546500348.

The previous prime is 19546500331. The next prime is 19546500371. The reversal of 19546500349 is 94300564591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13928248324 + 5618252025 = 118018^2 + 74955^2 .

It is a cyclic number.

It is not a de Polignac number, because 19546500349 - 2⁵ = 19546500317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19546500299 and 19546500308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19546570349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9773250174 + 9773250175.

It is an arithmetic number, because the mean of its divisors is an integer number (9773250175).

Almost surely, 2^19546500349 is an apocalyptic number.

It is an amenable number.

19546500349 is a deficient number, since it is larger than the sum of its proper divisors (1).

19546500349 is an equidigital number, since it uses as much as digits as its factorization.

19546500349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 19546500349 in words is "nineteen billion, five hundred forty-six million, five hundred thousand, three hundred forty-nine".