2097818465 has 4 divisors (see below), whose sum is σ = 2517382164. Its totient is φ = 1678254768.

The previous prime is 2097818461. The next prime is 2097818491. The reversal of 2097818465 is 5648187902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1669866496 + 427951969 = 40864^2 + 20687^2 .

It is a cyclic number.

It is not a de Polignac number, because 2097818465 - 2² = 2097818461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2097818461) 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, 209781842 + ... + 209781851.

It is an arithmetic number, because the mean of its divisors is an integer number (629345541).

Almost surely, 2^2097818465 is an apocalyptic number.

It is an amenable number.

2097818465 is a deficient number, since it is larger than the sum of its proper divisors (419563699).

2097818465 is an equidigital number, since it uses as much as digits as its factorization.

2097818465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419563698.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 2097818465 is about 45801.9482664220. The cubic root of 2097818465 is about 1280.1355782903.

The spelling of 2097818465 in words is "two billion, ninety-seven million, eight hundred eighteen thousand, four hundred sixty-five".