2180421858 has 32 divisors (see below), whose sum is σ = 4416526080. Its totient is φ = 717552000.

The previous prime is 2180421851. The next prime is 2180421863. The reversal of 2180421858 is 8581240812.

It is not an unprimeable number, because it can be changed into a prime (2180421851) 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, 398316 + ... + 403752.

It is an arithmetic number, because the mean of its divisors is an integer number (138016440).

Almost surely, 2^2180421858 is an apocalyptic number.

2180421858 is an abundant number, since it is smaller than the sum of its proper divisors (2236104222).

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

2180421858 is a wasteful number, since it uses less digits than its factorization.

2180421858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282.

The product of its (nonzero) digits is 40960, while the sum is 39.

The square root of 2180421858 is about 46694.9875040137. The cubic root of 2180421858 is about 1296.7218902986.

The spelling of 2180421858 in words is "two billion, one hundred eighty million, four hundred twenty-one thousand, eight hundred fifty-eight".