2165985002 has 16 divisors (see below), whose sum is σ = 3371846400. Its totient is φ = 1042277040.

The previous prime is 2165984993. The next prime is 2165985007. The reversal of 2165985002 is 2005895612.

It is not an unprimeable number, because it can be changed into a prime (2165985007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42002 + ... + 78077.

It is an arithmetic number, because the mean of its divisors is an integer number (210740400).

Almost surely, 2^2165985002 is an apocalyptic number.

2165985002 is a deficient number, since it is larger than the sum of its proper divisors (1205861398).

2165985002 is a wasteful number, since it uses less digits than its factorization.

2165985002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120421.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 2165985002 is about 46540.1439834472. The cubic root of 2165985002 is about 1293.8536292884.

The spelling of 2165985002 in words is "two billion, one hundred sixty-five million, nine hundred eighty-five thousand, two".