2165064254 has 16 divisors (see below), whose sum is σ = 3272860080. Its totient is φ = 1074144000.

The previous prime is 2165064227. The next prime is 2165064301. The reversal of 2165064254 is 4524605612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127022 + ... + 143054.

It is an arithmetic number, because the mean of its divisors is an integer number (204553755).

Almost surely, 2^2165064254 is an apocalyptic number.

2165064254 is a deficient number, since it is larger than the sum of its proper divisors (1107795826).

2165064254 is a wasteful number, since it uses less digits than its factorization.

2165064254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16555.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 2165064254 is about 46530.2509556955. The cubic root of 2165064254 is about 1293.6702666787.

Adding to 2165064254 its reverse (4524605612), we get a palindrome (6689669866).

The spelling of 2165064254 in words is "two billion, one hundred sixty-five million, sixty-four thousand, two hundred fifty-four".