2162656465 has 8 divisors (see below), whose sum is σ = 2618997480. Its totient is φ = 1714252032.

The previous prime is 2162656427. The next prime is 2162656481. The reversal of 2162656465 is 5646562612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1077349329 + 1085307136 = 32823^2 + 32944^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2162656465 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1983544 + ... + 1984633.

It is an arithmetic number, because the mean of its divisors is an integer number (327374685).

Almost surely, 2^2162656465 is an apocalyptic number.

It is an amenable number.

2162656465 is a deficient number, since it is larger than the sum of its proper divisors (456341015).

2162656465 is a wasteful number, since it uses less digits than its factorization.

2162656465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968291.

The product of its digits is 518400, while the sum is 43.

The square root of 2162656465 is about 46504.3703860186. The cubic root of 2162656465 is about 1293.1905210323.

The spelling of 2162656465 in words is "two billion, one hundred sixty-two million, six hundred fifty-six thousand, four hundred sixty-five".