1097818069 has 2 divisors, whose sum is σ = 1097818070. Its totient is φ = 1097818068.

The previous prime is 1097818063. The next prime is 1097818109. The reversal of 1097818069 is 9608187901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 951722500 + 146095569 = 30850^2 + 12087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097818069 - 2⁹ = 1097817557 is a prime.

It is a super-2 number, since 2×1097818069² = 2410409025245777522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097818063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548909034 + 548909035.

It is an arithmetic number, because the mean of its divisors is an integer number (548909035).

Almost surely, 2^1097818069 is an apocalyptic number.

It is an amenable number.

1097818069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097818069 is an equidigital number, since it uses as much as digits as its factorization.

1097818069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 1097818069 is about 33133.3377280346. The cubic root of 1097818069 is about 1031.5971291318.

The spelling of 1097818069 in words is "one billion, ninety-seven million, eight hundred eighteen thousand, sixty-nine".