2169168864 has 24 divisors (see below), whose sum is σ = 5694068520. Its totient is φ = 723056256.

The previous prime is 2169168853. The next prime is 2169168887. The reversal of 2169168864 is 4688619612.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 11297659 + ... + 11297850.

It is an arithmetic number, because the mean of its divisors is an integer number (237252855).

Almost surely, 2^2169168864 is an apocalyptic number.

2169168864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2169168864 is an abundant number, since it is smaller than the sum of its proper divisors (3524899656).

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

2169168864 is a wasteful number, since it uses less digits than its factorization.

2169168864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22595522 (or 22595514 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 2169168864 is about 46574.3369679054. The cubic root of 2169168864 is about 1294.4872801219.

The spelling of 2169168864 in words is "two billion, one hundred sixty-nine million, one hundred sixty-eight thousand, eight hundred sixty-four".