2161618152 has 64 divisors (see below), whose sum is σ = 5493596160. Its totient is φ = 708696000.

The previous prime is 2161618097. The next prime is 2161618183. The reversal of 2161618152 is 2518161612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370377 + ... + 376167.

It is an arithmetic number, because the mean of its divisors is an integer number (85837440).

Almost surely, 2^2161618152 is an apocalyptic number.

It is an amenable number.

2161618152 is an abundant number, since it is smaller than the sum of its proper divisors (3331978008).

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

2161618152 is a wasteful number, since it uses less digits than its factorization.

2161618152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054 (or 6050 counting only the distinct ones).

The product of its digits is 5760, while the sum is 33.

The square root of 2161618152 is about 46493.2054390746. The cubic root of 2161618152 is about 1292.9835300014.

Adding to 2161618152 its reverse (2518161612), we get a palindrome (4679779764).

The spelling of 2161618152 in words is "two billion, one hundred sixty-one million, six hundred eighteen thousand, one hundred fifty-two".