2002111988 has 24 divisors (see below), whose sum is σ = 3565438464. Its totient is φ = 983455200.

The previous prime is 2002111987. The next prime is 2002111997. The reversal of 2002111988 is 8891112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002111987) 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, 217781 + ... + 226787.

It is an arithmetic number, because the mean of its divisors is an integer number (148559936).

Almost surely, 2^2002111988 is an apocalyptic number.

It is an amenable number.

2002111988 is a deficient number, since it is larger than the sum of its proper divisors (1563326476).

2002111988 is a wasteful number, since it uses less digits than its factorization.

2002111988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9983 (or 9981 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 2002111988 is about 44744.9660632344. The cubic root of 2002111988 is about 1260.3643835686.

The spelling of 2002111988 in words is "two billion, two million, one hundred eleven thousand, nine hundred eighty-eight".