2169799740 has 144 divisors (see below), whose sum is σ = 6826659840. Its totient is φ = 557262720.

The previous prime is 2169799739. The next prime is 2169799747. The reversal of 2169799740 is 479979612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169799747) 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 47 ways as a sum of consecutive naturals, for example, 1332807 + ... + 1334433.

It is an arithmetic number, because the mean of its divisors is an integer number (47407360).

Almost surely, 2^2169799740 is an apocalyptic number.

2169799740 is a gapful number since it is divisible by the number (20) 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 2169799740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3413329920).

2169799740 is an abundant number, since it is smaller than the sum of its proper divisors (4656860100).

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

2169799740 is a wasteful number, since it uses less digits than its factorization.

2169799740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 2169799740 is about 46581.1092611586. The cubic root of 2169799740 is about 1294.6127631755.

The spelling of 2169799740 in words is "two billion, one hundred sixty-nine million, seven hundred ninety-nine thousand, seven hundred forty".