19089381853 has 2 divisors, whose sum is σ = 19089381854. Its totient is φ = 19089381852.

The previous prime is 19089381827. The next prime is 19089381911. The reversal of 19089381853 is 35818398091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12020271769 + 7069110084 = 109637^2 + 84078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19089381853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19089381794 and 19089381803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19089381253) 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, 9544690926 + 9544690927.

It is an arithmetic number, because the mean of its divisors is an integer number (9544690927).

Almost surely, 2^19089381853 is an apocalyptic number.

It is an amenable number.

19089381853 is a deficient number, since it is larger than the sum of its proper divisors (1).

19089381853 is an equidigital number, since it uses as much as digits as its factorization.

19089381853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 19089381853 in words is "nineteen billion, eighty-nine million, three hundred eighty-one thousand, eight hundred fifty-three".