1097984569 has 4 divisors (see below), whose sum is σ = 1197801360. Its totient is φ = 998167780.

The previous prime is 1097984561. The next prime is 1097984609. The reversal of 1097984569 is 9654897901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1097984569 - 2³ = 1097984561 is a prime.

It is a super-2 number, since 2×1097984569² = 2411140227524231522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097984561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49908379 + ... + 49908400.

It is an arithmetic number, because the mean of its divisors is an integer number (299450340).

Almost surely, 2^1097984569 is an apocalyptic number.

It is an amenable number.

1097984569 is a deficient number, since it is larger than the sum of its proper divisors (99816791).

1097984569 is an equidigital number, since it uses as much as digits as its factorization.

1097984569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99816790.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The square root of 1097984569 is about 33135.8502078942. The cubic root of 1097984569 is about 1031.6492787074.

The spelling of 1097984569 in words is "one billion, ninety-seven million, nine hundred eighty-four thousand, five hundred sixty-nine".