1897413329633 has 2 divisors, whose sum is σ = 1897413329634. Its totient is φ = 1897413329632.

The previous prime is 1897413329579. The next prime is 1897413329639. The reversal of 1897413329633 is 3369233147981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1052692416064 + 844720913569 = 1026008^2 + 919087^2 .

It is an emirp because it is prime and its reverse (3369233147981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1897413329633 - 2¹⁸ = 1897413067489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1897413329639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948706664816 + 948706664817.

It is an arithmetic number, because the mean of its divisors is an integer number (948706664817).

Almost surely, 2^{1897413329633} is an apocalyptic number.

It is an amenable number.

1897413329633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897413329633 is an equidigital number, since it uses as much as digits as its factorization.

1897413329633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 59.

The spelling of 1897413329633 in words is "one trillion, eight hundred ninety-seven billion, four hundred thirteen million, three hundred twenty-nine thousand, six hundred thirty-three".