1397205390433 has 2 divisors, whose sum is σ = 1397205390434. Its totient is φ = 1397205390432.

The previous prime is 1397205390401. The next prime is 1397205390439. The reversal of 1397205390433 is 3340935027931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1307153182864 + 90052207569 = 1143308^2 + 300087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397205390433 - 2⁵ = 1397205390401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1397205390439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698602695216 + 698602695217.

It is an arithmetic number, because the mean of its divisors is an integer number (698602695217).

Almost surely, 2^{1397205390433} is an apocalyptic number.

It is an amenable number.

1397205390433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397205390433 is an equidigital number, since it uses as much as digits as its factorization.

1397205390433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 49.

The spelling of 1397205390433 in words is "one trillion, three hundred ninety-seven billion, two hundred five million, three hundred ninety thousand, four hundred thirty-three".