19450799299849 has 16 divisors (see below), whose sum is σ = 20651499614592. Its totient is φ = 18256387016448.

The previous prime is 19450799299753. The next prime is 19450799299853. The reversal of 19450799299849 is 94899299705491.

It is a cyclic number.

It is not a de Polignac number, because 19450799299849 - 2⁷ = 19450799299721 is a prime.

It is a super-2 number, since 2×19450799299849² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19450799299249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108487372 + ... + 108666514.

It is an arithmetic number, because the mean of its divisors is an integer number (1290718725912).

Almost surely, 2^{19450799299849} is an apocalyptic number.

It is an amenable number.

19450799299849 is a deficient number, since it is larger than the sum of its proper divisors (1200700314743).

19450799299849 is a wasteful number, since it uses less digits than its factorization.

19450799299849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196656.

The product of its (nonzero) digits is 4761711360, while the sum is 85.

The spelling of 19450799299849 in words is "nineteen trillion, four hundred fifty billion, seven hundred ninety-nine million, two hundred ninety-nine thousand, eight hundred forty-nine".