2165209463 has 8 divisors (see below), whose sum is σ = 2211409200. Its totient is φ = 2119488768.

The previous prime is 2165209393. The next prime is 2165209469. The reversal of 2165209463 is 3649025612.

2165209463 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2165209463 - 2¹⁸ = 2164947319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165209469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110618 + ... + 128711.

It is an arithmetic number, because the mean of its divisors is an integer number (276426150).

Almost surely, 2^2165209463 is an apocalyptic number.

2165209463 is a deficient number, since it is larger than the sum of its proper divisors (46199737).

2165209463 is a wasteful number, since it uses less digits than its factorization.

2165209463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239521.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 2165209463 is about 46531.8113015172. The cubic root of 2165209463 is about 1293.6991878167.

The spelling of 2165209463 in words is "two billion, one hundred sixty-five million, two hundred nine thousand, four hundred sixty-three".