2169313888 has 144 divisors (see below), whose sum is σ = 5119329600. Its totient is φ = 901904640.

The previous prime is 2169313843. The next prime is 2169313889. The reversal of 2169313888 is 8883139612.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169313889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12118983 + ... + 12119161.

It is an arithmetic number, because the mean of its divisors is an integer number (35550900).

Almost surely, 2^2169313888 is an apocalyptic number.

2169313888 is a gapful number since it is divisible by the number (28) 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 2169313888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2559664800).

2169313888 is an abundant number, since it is smaller than the sum of its proper divisors (2950015712).

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

2169313888 is a wasteful number, since it uses less digits than its factorization.

2169313888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 378 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 2169313888 is about 46575.8938507894. The cubic root of 2169313888 is about 1294.5161279667.

The spelling of 2169313888 in words is "two billion, one hundred sixty-nine million, three hundred thirteen thousand, eight hundred eighty-eight".