2165135546 has 16 divisors (see below), whose sum is σ = 3736245120. Its totient is φ = 921769200.

The previous prime is 2165135537. The next prime is 2165135579. The reversal of 2165135546 is 6455315612.

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, 509981 + ... + 514208.

It is an arithmetic number, because the mean of its divisors is an integer number (233515320).

Almost surely, 2^2165135546 is an apocalyptic number.

2165135546 is a deficient number, since it is larger than the sum of its proper divisors (1571109574).

2165135546 is a wasteful number, since it uses less digits than its factorization.

2165135546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024349.

The product of its digits is 108000, while the sum is 38.

The square root of 2165135546 is about 46531.0170316532. The cubic root of 2165135546 is about 1293.6844659999.

The spelling of 2165135546 in words is "two billion, one hundred sixty-five million, one hundred thirty-five thousand, five hundred forty-six".