2002045989 has 8 divisors (see below), whose sum is σ = 2676120160. Its totient is φ = 1331334576.

The previous prime is 2002045957. The next prime is 2002045993. The reversal of 2002045989 is 9895402002.

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

It is not a de Polignac number, because 2002045989 - 2⁵ = 2002045957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002045939) 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, 839299 + ... + 841680.

It is an arithmetic number, because the mean of its divisors is an integer number (334515020).

Almost surely, 2^2002045989 is an apocalyptic number.

It is an amenable number.

2002045989 is a deficient number, since it is larger than the sum of its proper divisors (674074171).

2002045989 is a wasteful number, since it uses less digits than its factorization.

2002045989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681379.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 2002045989 is about 44744.2285552003. The cubic root of 2002045989 is about 1260.3505342429.

The spelling of 2002045989 in words is "two billion, two million, forty-five thousand, nine hundred eighty-nine".