2169840552 has 128 divisors (see below), whose sum is σ = 6147273600. Its totient is φ = 632970240.

The previous prime is 2169840529. The next prime is 2169840553. The reversal of 2169840552 is 2550489612.

It is a super-2 number, since 2×2169840552² = 9416416042207329408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2169840553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6438528 + ... + 6438864.

It is an arithmetic number, because the mean of its divisors is an integer number (48025575).

Almost surely, 2^2169840552 is an apocalyptic number.

2169840552 is a gapful number since it is divisible by the number (22) 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 2169840552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3073636800).

2169840552 is an abundant number, since it is smaller than the sum of its proper divisors (3977433048).

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

2169840552 is a wasteful number, since it uses less digits than its factorization.

2169840552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 2169840552 is about 46581.5473336814. The cubic root of 2169840552 is about 1294.6208799622.

The spelling of 2169840552 in words is "two billion, one hundred sixty-nine million, eight hundred forty thousand, five hundred fifty-two".