2169451206 has 48 divisors (see below), whose sum is σ = 5073379584. Its totient is φ = 666029952.

The previous prime is 2169451189. The next prime is 2169451231. The reversal of 2169451206 is 6021549612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96795 + ... + 117081.

It is an arithmetic number, because the mean of its divisors is an integer number (105695408).

Almost surely, 2^2169451206 is an apocalyptic number.

2169451206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2169451206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2536689792).

2169451206 is an abundant number, since it is smaller than the sum of its proper divisors (2903928378).

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

2169451206 is a wasteful number, since it uses less digits than its factorization.

2169451206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20765 (or 20762 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2169451206 is about 46577.3679591280. The cubic root of 2169451206 is about 1294.5434417664.

It can be divided in two parts, 21694 and 51206, that added together give a square (72900 = 270²).

The spelling of 2169451206 in words is "two billion, one hundred sixty-nine million, four hundred fifty-one thousand, two hundred six".