19450275349 has 2 divisors, whose sum is σ = 19450275350. Its totient is φ = 19450275348.

The previous prime is 19450275311. The next prime is 19450275367. The reversal of 19450275349 is 94357205491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17927871025 + 1522404324 = 133895^2 + 39018^2 .

It is a cyclic number.

It is not a de Polignac number, because 19450275349 - 2¹⁷ = 19450144277 is a prime.

It is a super-2 number, since 2×19450275349² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19450275049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9725137674 + 9725137675.

It is an arithmetic number, because the mean of its divisors is an integer number (9725137675).

Almost surely, 2^19450275349 is an apocalyptic number.

It is an amenable number.

19450275349 is a deficient number, since it is larger than the sum of its proper divisors (1).

19450275349 is an equidigital number, since it uses as much as digits as its factorization.

19450275349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 19450275349 in words is "nineteen billion, four hundred fifty million, two hundred seventy-five thousand, three hundred forty-nine".