2161504308 has 24 divisors (see below), whose sum is σ = 5062266720. Its totient is φ = 717821920.

The previous prime is 2161504307. The next prime is 2161504351. The reversal of 2161504308 is 8034051612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161504307) by changing a digit.

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, 331578 + ... + 338033.

It is an arithmetic number, because the mean of its divisors is an integer number (210927780).

Almost surely, 2^2161504308 is an apocalyptic number.

It is an amenable number.

2161504308 is an abundant number, since it is smaller than the sum of its proper divisors (2900762412).

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

2161504308 is a wasteful number, since it uses less digits than its factorization.

2161504308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669887 (or 669885 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2161504308 is about 46491.9811150267. The cubic root of 2161504308 is about 1292.9608308025.

The spelling of 2161504308 in words is "two billion, one hundred sixty-one million, five hundred four thousand, three hundred eight".