2168289900 has 108 divisors (see below), whose sum is σ = 7767318832. Its totient is φ = 495607680.

The previous prime is 2168289887. The next prime is 2168289901. The reversal of 2168289900 is 99828612.

2168289900 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2168289901) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 165787 + ... + 178386.

Almost surely, 2^2168289900 is an apocalyptic number.

2168289900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2168289900 is an abundant number, since it is smaller than the sum of its proper divisors (5599028932).

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

2168289900 is a wasteful number, since it uses less digits than its factorization.

2168289900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344200 (or 344190 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 2168289900 is about 46564.8998710402. The cubic root of 2168289900 is about 1294.3124110812.

The spelling of 2168289900 in words is "two billion, one hundred sixty-eight million, two hundred eighty-nine thousand, nine hundred".