1097361689 has 2 divisors, whose sum is σ = 1097361690. Its totient is φ = 1097361688.

The previous prime is 1097361673. The next prime is 1097361721. The reversal of 1097361689 is 9861637901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005968089 + 91393600 = 31717^2 + 9560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097361689 - 2⁴ = 1097361673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1097361289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548680844 + 548680845.

It is an arithmetic number, because the mean of its divisors is an integer number (548680845).

Almost surely, 2^1097361689 is an apocalyptic number.

It is an amenable number.

1097361689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097361689 is an equidigital number, since it uses as much as digits as its factorization.

1097361689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1097361689 is about 33126.4499909061. The cubic root of 1097361689 is about 1031.4541590089.

The spelling of 1097361689 in words is "one billion, ninety-seven million, three hundred sixty-one thousand, six hundred eighty-nine".