2169021888 has 336 divisors, whose sum is σ = 7278136320. Its totient is φ = 634521600.

The previous prime is 2169021871. The next prime is 2169021901. The reversal of 2169021888 is 8881209612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5303028 + ... + 5303436.

It is an arithmetic number, because the mean of its divisors is an integer number (21661120).

Almost surely, 2^2169021888 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 2169021888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3639068160).

2169021888 is an abundant number, since it is smaller than the sum of its proper divisors (5109114432).

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

2169021888 is a wasteful number, since it uses less digits than its factorization.

2169021888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 2169021888 is about 46572.7590765246. The cubic root of 2169021888 is about 1294.4580426779.

The spelling of 2169021888 in words is "two billion, one hundred sixty-nine million, twenty-one thousand, eight hundred eighty-eight".