2165468769 has 16 divisors (see below), whose sum is σ = 3208920640. Its totient is φ = 1443277440.

The previous prime is 2165468759. The next prime is 2165468783. The reversal of 2165468769 is 9678645612.

2165468769 is a `hidden beast` number, since 2 + 16 + 546 + 87 + 6 + 9 = 666.

It is not a de Polignac number, because 2165468769 - 2¹⁵ = 2165436001 is a prime.

It is a super-2 number, since 2×2165468769² = 9378509979028750722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165468759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134994 + ... + 150180.

It is an arithmetic number, because the mean of its divisors is an integer number (200557540).

Almost surely, 2^2165468769 is an apocalyptic number.

It is an amenable number.

2165468769 is a deficient number, since it is larger than the sum of its proper divisors (1043451871).

2165468769 is a wasteful number, since it uses less digits than its factorization.

2165468769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20477 (or 20471 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 2165468769 is about 46534.5975484907. The cubic root of 2165468769 is about 1293.7508303292.

The spelling of 2165468769 in words is "two billion, one hundred sixty-five million, four hundred sixty-eight thousand, seven hundred sixty-nine".