1694204211449 has 2 divisors, whose sum is σ = 1694204211450. Its totient is φ = 1694204211448.

The previous prime is 1694204211379. The next prime is 1694204211487. The reversal of 1694204211449 is 9441124024961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 847126956025 + 847077255424 = 920395^2 + 920368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1694204211449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1694204211149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847102105724 + 847102105725.

It is an arithmetic number, because the mean of its divisors is an integer number (847102105725).

Almost surely, 2^{1694204211449} is an apocalyptic number.

It is an amenable number.

1694204211449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1694204211449 is an equidigital number, since it uses as much as digits as its factorization.

1694204211449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 1694204211449 in words is "one trillion, six hundred ninety-four billion, two hundred four million, two hundred eleven thousand, four hundred forty-nine".