19249843061 has 2 divisors, whose sum is σ = 19249843062. Its totient is φ = 19249843060.

The previous prime is 19249843051. The next prime is 19249843163. The reversal of 19249843061 is 16034894291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15833440561 + 3416402500 = 125831^2 + 58450^2 .

It is a cyclic number.

It is not a de Polignac number, because 19249843061 - 2²² = 19245648757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19249842997 and 19249843015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19249843051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9624921530 + 9624921531.

It is an arithmetic number, because the mean of its divisors is an integer number (9624921531).

Almost surely, 2^19249843061 is an apocalyptic number.

It is an amenable number.

19249843061 is a deficient number, since it is larger than the sum of its proper divisors (1).

19249843061 is an equidigital number, since it uses as much as digits as its factorization.

19249843061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 19249843061 in words is "nineteen billion, two hundred forty-nine million, eight hundred forty-three thousand, sixty-one".