2168261300 has 18 divisors (see below), whose sum is σ = 4705127238. Its totient is φ = 867304480.

The previous prime is 2168261281. The next prime is 2168261317. The reversal of 2168261300 is 31628612.

It can be written as a sum of positive squares in 3 ways, for example, as 20124196 + 2148137104 = 4486^2 + 46348^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10841207 + ... + 10841406.

Almost surely, 2^2168261300 is an apocalyptic number.

2168261300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2168261300 is an abundant number, since it is smaller than the sum of its proper divisors (2536865938).

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

2168261300 is a wasteful number, since it uses less digits than its factorization.

2168261300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21682627 (or 21682620 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2168261300 is about 46564.5927717617. The cubic root of 2168261300 is about 1294.3067203450.

Adding to 2168261300 its reverse (31628612), we get a palindrome (2199889912).

The spelling of 2168261300 in words is "two billion, one hundred sixty-eight million, two hundred sixty-one thousand, three hundred".