2161065354 has 32 divisors (see below), whose sum is σ = 5032782720. Its totient is φ = 605796672.

The previous prime is 2161065353. The next prime is 2161065359. The reversal of 2161065354 is 4535601612.

It is not an unprimeable number, because it can be changed into a prime (2161065353) 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, 483189 + ... + 487640.

It is an arithmetic number, because the mean of its divisors is an integer number (157274460).

Almost surely, 2^2161065354 is an apocalyptic number.

2161065354 is an abundant number, since it is smaller than the sum of its proper divisors (2871717366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161065354 is a wasteful number, since it uses less digits than its factorization.

2161065354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970894.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2161065354 is about 46487.2601257592. The cubic root of 2161065354 is about 1292.8733009049.

Adding to 2161065354 its reverse (4535601612), we get a palindrome (6696666966).

The spelling of 2161065354 in words is "two billion, one hundred sixty-one million, sixty-five thousand, three hundred fifty-four".