2128876618 has 16 divisors (see below), whose sum is σ = 3522761280. Its totient is φ = 956797600.

The previous prime is 2128876613. The next prime is 2128876639. The reversal of 2128876618 is 8166788212.

It is not an unprimeable number, because it can be changed into a prime (2128876613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541678 + ... + 545593.

It is an arithmetic number, because the mean of its divisors is an integer number (220172580).

Almost surely, 2^2128876618 is an apocalyptic number.

2128876618 is a deficient number, since it is larger than the sum of its proper divisors (1393884662).

2128876618 is a wasteful number, since it uses less digits than its factorization.

2128876618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087373.

The product of its digits is 516096, while the sum is 49.

The square root of 2128876618 is about 46139.7509529473. The cubic root of 2128876618 is about 1286.4221146388.

The spelling of 2128876618 in words is "two billion, one hundred twenty-eight million, eight hundred seventy-six thousand, six hundred eighteen".