2169929216 has 80 divisors (see below), whose sum is σ = 5336262624. Its totient is φ = 858415104.

The previous prime is 2169929213. The next prime is 2169929221. The reversal of 2169929216 is 6129299612.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169929213) 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, 23306 + ... + 69878.

Almost surely, 2^2169929216 is an apocalyptic number.

2169929216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2169929216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2668131312).

2169929216 is an abundant number, since it is smaller than the sum of its proper divisors (3166333408).

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

2169929216 is an equidigital number, since it uses as much as digits as its factorization.

2169929216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46611 (or 46595 counting only the distinct ones).

The product of its digits is 209952, while the sum is 47.

The square root of 2169929216 is about 46582.4990312886. The cubic root of 2169929216 is about 1294.6385133166.

The spelling of 2169929216 in words is "two billion, one hundred sixty-nine million, nine hundred twenty-nine thousand, two hundred sixteen".