2019900 has 36 divisors (see below), whose sum is σ = 5845112. Its totient is φ = 538560.

The previous prime is 2019881. The next prime is 2019907. The reversal of 2019900 is 99102.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3067 + ... + 3666.

2^2019900 is an apocalyptic number.

2019900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2019900 is an abundant number, since it is smaller than the sum of its proper divisors (3825212).

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

2019900 is a wasteful number, since it uses less digits than its factorization.

2019900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6750 (or 6743 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 2019900 is about 1421.2318600425. The cubic root of 2019900 is about 126.4086004670.

It can be divided in two parts, 201 and 9900, that added together give a palindrome (10101).

The spelling of 2019900 in words is "two million, nineteen thousand, nine hundred".