19278982593853 has 2 divisors, whose sum is σ = 19278982593854. Its totient is φ = 19278982593852.

The previous prime is 19278982593811. The next prime is 19278982593877. The reversal of 19278982593853 is 35839528987291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17000926675524 + 2278055918329 = 4123218^2 + 1509323^2 .

It is an emirp because it is prime and its reverse (35839528987291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19278982593853 - 2²¹ = 19278980496701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19278982593803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9639491296926 + 9639491296927.

It is an arithmetic number, because the mean of its divisors is an integer number (9639491296927).

Almost surely, 2^{19278982593853} is an apocalyptic number.

It is an amenable number.

19278982593853 is a deficient number, since it is larger than the sum of its proper divisors (1).

19278982593853 is an equidigital number, since it uses as much as digits as its factorization.

19278982593853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2351462400, while the sum is 79.

The spelling of 19278982593853 in words is "nineteen trillion, two hundred seventy-eight billion, nine hundred eighty-two million, five hundred ninety-three thousand, eight hundred fifty-three".