2180826465 has 16 divisors (see below), whose sum is σ = 3508604736. Its totient is φ = 1156680000.

The previous prime is 2180826451. The next prime is 2180826481. The reversal of 2180826465 is 5646280812.

It is not a de Polignac number, because 2180826465 - 2⁷ = 2180826337 is a prime.

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, 398911 + ... + 404340.

It is an arithmetic number, because the mean of its divisors is an integer number (219287796).

Almost surely, 2^2180826465 is an apocalyptic number.

It is an amenable number.

2180826465 is a deficient number, since it is larger than the sum of its proper divisors (1327778271).

2180826465 is a wasteful number, since it uses less digits than its factorization.

2180826465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803440.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 2180826465 is about 46699.3197487929. The cubic root of 2180826465 is about 1296.8020934793.

The spelling of 2180826465 in words is "two billion, one hundred eighty million, eight hundred twenty-six thousand, four hundred sixty-five".