2165050620 has 120 divisors (see below), whose sum is σ = 6852528144. Its totient is φ = 572189184.

The previous prime is 2165050603. The next prime is 2165050621. The reversal of 2165050620 is 260505612.

2165050620 is a `hidden beast` number, since 2 + 1 + 650 + 5 + 0 + 6 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165050621) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 177147 + ... + 188973.

Almost surely, 2^2165050620 is an apocalyptic number.

2165050620 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 2165050620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3426264072).

2165050620 is an abundant number, since it is smaller than the sum of its proper divisors (4687477524).

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

2165050620 is a wasteful number, since it uses less digits than its factorization.

2165050620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11961 (or 11950 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2165050620 is about 46530.1044486255. The cubic root of 2165050620 is about 1293.6675511415.

The spelling of 2165050620 in words is "two billion, one hundred sixty-five million, fifty thousand, six hundred twenty".