1789135697 has 2 divisors, whose sum is σ = 1789135698. Its totient is φ = 1789135696.

The previous prime is 1789135687. The next prime is 1789135717. The reversal of 1789135697 is 7965319871.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1786837441 + 2298256 = 42271^2 + 1516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1789135697 - 2¹⁰ = 1789134673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1789135687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 894567848 + 894567849.

It is an arithmetic number, because the mean of its divisors is an integer number (894567849).

Almost surely, 2^1789135697 is an apocalyptic number.

It is an amenable number.

1789135697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1789135697 is an equidigital number, since it uses as much as digits as its factorization.

1789135697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 56.

The square root of 1789135697 is about 42298.1760481466. The cubic root of 1789135697 is about 1213.9880925365.

The spelling of 1789135697 in words is "one billion, seven hundred eighty-nine million, one hundred thirty-five thousand, six hundred ninety-seven".