2097909569 has 6 divisors (see below), whose sum is σ = 2440425474. Its totient is φ = 1798208160.

The previous prime is 2097909563. The next prime is 2097909601. The reversal of 2097909569 is 9659097902.

It can be written as a sum of positive squares in only one way, i.e., 1098591025 + 999318544 = 33145^2 + 31612^2 .

It is not a de Polignac number, because 2097909569 - 2⁸ = 2097909313 is a prime.

It is a super-2 number, since 2×2097909569² = 8802449119403531522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2097909563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21407192 + ... + 21407289.

It is an arithmetic number, because the mean of its divisors is an integer number (406737579).

Almost surely, 2^2097909569 is an apocalyptic number.

It is an amenable number.

2097909569 is a deficient number, since it is larger than the sum of its proper divisors (342515905).

2097909569 is an equidigital number, since it uses as much as digits as its factorization.

2097909569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42814495 (or 42814488 counting only the distinct ones).

The product of its (nonzero) digits is 2755620, while the sum is 56.

The square root of 2097909569 is about 45802.9427984709. The cubic root of 2097909569 is about 1280.1541092524.

The spelling of 2097909569 in words is "two billion, ninety-seven million, nine hundred nine thousand, five hundred sixty-nine".