19753086949 has 2 divisors, whose sum is σ = 19753086950. Its totient is φ = 19753086948.

The previous prime is 19753086853. The next prime is 19753086953. The reversal of 19753086949 is 94968035791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18463917924 + 1289169025 = 135882^2 + 35905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19753086949 is a prime.

It is a super-3 number, since 3×19753086949³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19753086959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9876543474 + 9876543475.

It is an arithmetic number, because the mean of its divisors is an integer number (9876543475).

Almost surely, 2^19753086949 is an apocalyptic number.

It is an amenable number.

19753086949 is a deficient number, since it is larger than the sum of its proper divisors (1).

19753086949 is an equidigital number, since it uses as much as digits as its factorization.

19753086949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 19753086949 in words is "nineteen billion, seven hundred fifty-three million, eighty-six thousand, nine hundred forty-nine".