19010643853 has 2 divisors, whose sum is σ = 19010643854. Its totient is φ = 19010643852.

The previous prime is 19010643823. The next prime is 19010643913. The reversal of 19010643853 is 35834601091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17428752324 + 1581891529 = 132018^2 + 39773^2 .

It is an emirp because it is prime and its reverse (35834601091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19010643853 - 2⁹ = 19010643341 is a prime.

It is a super-2 number, since 2×19010643853² (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 (19010643803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9505321926 + 9505321927.

It is an arithmetic number, because the mean of its divisors is an integer number (9505321927).

Almost surely, 2^19010643853 is an apocalyptic number.

It is an amenable number.

19010643853 is a deficient number, since it is larger than the sum of its proper divisors (1).

19010643853 is an equidigital number, since it uses as much as digits as its factorization.

19010643853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 19010643853 in words is "nineteen billion, ten million, six hundred forty-three thousand, eight hundred fifty-three".