2162666940 has 144 divisors (see below), whose sum is σ = 7208353152. Its totient is φ = 482799744.

The previous prime is 2162666939. The next prime is 2162666969. The reversal of 2162666940 is 496662612.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2162666892 and 2162666901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117867 + ... + 134973.

It is an arithmetic number, because the mean of its divisors is an integer number (50058008).

Almost surely, 2^2162666940 is an apocalyptic number.

2162666940 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 2162666940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3604176576).

2162666940 is an abundant number, since it is smaller than the sum of its proper divisors (5045686212).

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

2162666940 is a wasteful number, since it uses less digits than its factorization.

2162666940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17176 (or 17167 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 2162666940 is about 46504.4830097056. The cubic root of 2162666940 is about 1293.1926089196.

The spelling of 2162666940 in words is "two billion, one hundred sixty-two million, six hundred sixty-six thousand, nine hundred forty".