1004645399993 has 2 divisors, whose sum is σ = 1004645399994. Its totient is φ = 1004645399992.

The previous prime is 1004645399987. The next prime is 1004645400001. The reversal of 1004645399993 is 3999935464001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 885625919929 + 119019480064 = 941077^2 + 344992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004645399993 - 2¹⁶ = 1004645334457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1004645399393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502322699996 + 502322699997.

It is an arithmetic number, because the mean of its divisors is an integer number (502322699997).

Almost surely, 2^{1004645399993} is an apocalyptic number.

It is an amenable number.

1004645399993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004645399993 is an equidigital number, since it uses as much as digits as its factorization.

1004645399993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28343520, while the sum is 62.

The spelling of 1004645399993 in words is "one trillion, four billion, six hundred forty-five million, three hundred ninety-nine thousand, nine hundred ninety-three".