2002164621 has 8 divisors (see below), whose sum is σ = 2679054144. Its totient is φ = 1330025760.

The previous prime is 2002164607. The next prime is 2002164629. The reversal of 2002164621 is 1264612002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2002164621 - 2⁶ = 2002164557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002164591 and 2002164600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002164629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1186681 + ... + 1188366.

It is an arithmetic number, because the mean of its divisors is an integer number (334881768).

Almost surely, 2^2002164621 is an apocalyptic number.

It is an amenable number.

2002164621 is a deficient number, since it is larger than the sum of its proper divisors (676889523).

2002164621 is a wasteful number, since it uses less digits than its factorization.

2002164621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375331.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2002164621 is about 44745.5542037419. The cubic root of 2002164621 is about 1260.3754279354.

Adding to 2002164621 its reverse (1264612002), we get a palindrome (3266776623).

The spelling of 2002164621 in words is "two billion, two million, one hundred sixty-four thousand, six hundred twenty-one".