2165051802 has 64 divisors (see below), whose sum is σ = 4505808384. Its totient is φ = 693126720.

The previous prime is 2165051789. The next prime is 2165051809. The reversal of 2165051802 is 2081505612.

It is a self number, because there is not a number n which added to its sum of digits gives 2165051802.

It is not an unprimeable number, because it can be changed into a prime (2165051809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6540777 + ... + 6541107.

It is an arithmetic number, because the mean of its divisors is an integer number (70403256).

Almost surely, 2^2165051802 is an apocalyptic number.

2165051802 is an abundant number, since it is smaller than the sum of its proper divisors (2340756582).

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

2165051802 is a wasteful number, since it uses less digits than its factorization.

2165051802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 2165051802 is about 46530.1171500782. The cubic root of 2165051802 is about 1293.6677865655.

The spelling of 2165051802 in words is "two billion, one hundred sixty-five million, fifty-one thousand, eight hundred two".