1494473010689 has 2 divisors, whose sum is σ = 1494473010690. Its totient is φ = 1494473010688.

The previous prime is 1494473010671. The next prime is 1494473010703. The reversal of 1494473010689 is 9860103744941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795423178225 + 699049832464 = 891865^2 + 836092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1494473010689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1494473010629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747236505344 + 747236505345.

It is an arithmetic number, because the mean of its divisors is an integer number (747236505345).

Almost surely, 2^{1494473010689} is an apocalyptic number.

It is an amenable number.

1494473010689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1494473010689 is an equidigital number, since it uses as much as digits as its factorization.

1494473010689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 1494473010689 in words is "one trillion, four hundred ninety-four billion, four hundred seventy-three million, ten thousand, six hundred eighty-nine".