2118697465 has 8 divisors (see below), whose sum is σ = 2560995720. Its totient is φ = 1682585472.

The previous prime is 2118697433. The next prime is 2118697577. The reversal of 2118697465 is 5647968112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63616576 + 2055080889 = 7976^2 + 45333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2118697465 - 2⁵ = 2118697433 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1545810 + ... + 1547179.

It is an arithmetic number, because the mean of its divisors is an integer number (320124465).

Almost surely, 2^2118697465 is an apocalyptic number.

It is an amenable number.

2118697465 is a deficient number, since it is larger than the sum of its proper divisors (442298255).

2118697465 is a wasteful number, since it uses less digits than its factorization.

2118697465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093131.

The product of its digits is 725760, while the sum is 49.

The square root of 2118697465 is about 46029.3109333607. The cubic root of 2118697465 is about 1284.3685098347.

The spelling of 2118697465 in words is "two billion, one hundred eighteen million, six hundred ninety-seven thousand, four hundred sixty-five".