2169995952 has 80 divisors (see below), whose sum is σ = 5709813120. Its totient is φ = 710040576.

The previous prime is 2169995929. The next prime is 2169995981. The reversal of 2169995952 is 2595999612.

It is a junction number, because it is equal to n+sod(n) for n = 2169995892 and 2169995901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578499 + ... + 582237.

It is an arithmetic number, because the mean of its divisors is an integer number (71372664).

Almost surely, 2^2169995952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2169995952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2854906560).

2169995952 is an abundant number, since it is smaller than the sum of its proper divisors (3539817168).

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

2169995952 is a wasteful number, since it uses less digits than its factorization.

2169995952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970 (or 3964 counting only the distinct ones).

The product of its digits is 3936600, while the sum is 57.

The square root of 2169995952 is about 46583.2153463026. The cubic root of 2169995952 is about 1294.6517853486.

The spelling of 2169995952 in words is "two billion, one hundred sixty-nine million, nine hundred ninety-five thousand, nine hundred fifty-two".