2182154689 has 16 divisors (see below), whose sum is σ = 2564985024. Its totient is φ = 1830225600.

The previous prime is 2182154687. The next prime is 2182154719. The reversal of 2182154689 is 9864512812.

It is a cyclic number.

It is not a de Polignac number, because 2182154689 - 2¹ = 2182154687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2182154687) 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, 462834 + ... + 467524.

It is an arithmetic number, because the mean of its divisors is an integer number (160311564).

Almost surely, 2^2182154689 is an apocalyptic number.

It is an amenable number.

2182154689 is a deficient number, since it is larger than the sum of its proper divisors (382830335).

2182154689 is a wasteful number, since it uses less digits than its factorization.

2182154689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968.

The product of its digits is 276480, while the sum is 46.

The square root of 2182154689 is about 46713.5386049912. The cubic root of 2182154689 is about 1297.0653108309.

The spelling of 2182154689 in words is "two billion, one hundred eighty-two million, one hundred fifty-four thousand, six hundred eighty-nine".