2154412218 has 32 divisors (see below), whose sum is σ = 4932411264. Its totient is φ = 614541312.

The previous prime is 2154412217. The next prime is 2154412237. The reversal of 2154412218 is 8122144512.

It is not an unprimeable number, because it can be changed into a prime (2154412217) 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, 15655 + ... + 67482.

It is an arithmetic number, because the mean of its divisors is an integer number (154137852).

Almost surely, 2^2154412218 is an apocalyptic number.

2154412218 is an abundant number, since it is smaller than the sum of its proper divisors (2777999046).

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

2154412218 is a wasteful number, since it uses less digits than its factorization.

2154412218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83766.

The product of its digits is 5120, while the sum is 30.

The square root of 2154412218 is about 46415.6462628713. The cubic root of 2154412218 is about 1291.5451744562.

The spelling of 2154412218 in words is "two billion, one hundred fifty-four million, four hundred twelve thousand, two hundred eighteen".