2001866700 has 36 divisors (see below), whose sum is σ = 5792068520. Its totient is φ = 533831040.

The previous prime is 2001866653. The next prime is 2001866719. The reversal of 2001866700 is 76681002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3336145 + ... + 3336744.

Almost surely, 2^2001866700 is an apocalyptic number.

2001866700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001866700 is an abundant number, since it is smaller than the sum of its proper divisors (3790201820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001866700 is a wasteful number, since it uses less digits than its factorization.

2001866700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672906 (or 6672899 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2001866700 is about 44742.2250229020. The cubic root of 2001866700 is about 1260.3129104431.

The spelling of 2001866700 in words is "two billion, one million, eight hundred sixty-six thousand, seven hundred".