2165700002 has 4 divisors (see below), whose sum is σ = 3248550006. Its totient is φ = 1082850000.

The previous prime is 2165699999. The next prime is 2165700013. The reversal of 2165700002 is 2000075612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1257340681 + 908359321 = 35459^2 + 30139^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541424999 + ... + 541425002.

Almost surely, 2^2165700002 is an apocalyptic number.

2165700002 is a deficient number, since it is larger than the sum of its proper divisors (1082850004).

2165700002 is a wasteful number, since it uses less digits than its factorization.

2165700002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082850003.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2165700002 is about 46537.0820099413. The cubic root of 2165700002 is about 1293.7968784401.

Adding to 2165700002 its reverse (2000075612), we get a palindrome (4165775614).

The spelling of 2165700002 in words is "two billion, one hundred sixty-five million, seven hundred thousand, two".