19454806753 has 2 divisors, whose sum is σ = 19454806754. Its totient is φ = 19454806752.

The previous prime is 19454806739. The next prime is 19454806823. The reversal of 19454806753 is 35760845491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18585323584 + 869483169 = 136328^2 + 29487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19454806753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19454806753.

It is not a weakly prime, because it can be changed into another prime (19554806753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9727403376 + 9727403377.

It is an arithmetic number, because the mean of its divisors is an integer number (9727403377).

Almost surely, 2^19454806753 is an apocalyptic number.

It is an amenable number.

19454806753 is a deficient number, since it is larger than the sum of its proper divisors (1).

19454806753 is an equidigital number, since it uses as much as digits as its factorization.

19454806753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 19454806753 in words is "nineteen billion, four hundred fifty-four million, eight hundred six thousand, seven hundred fifty-three".