2099601900 has 108 divisors (see below), whose sum is σ = 7179399864. Its totient is φ = 508992000.

The previous prime is 2099601899. The next prime is 2099601901. The reversal of 2099601900 is 91069902.

It is an interprime number because it is at equal distance from previous prime (2099601899) and next prime (2099601901).

It is a super-2 number, since 2×2099601900² = 8816656276967220000, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2099601901) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 96141 + ... + 115940.

Almost surely, 2^2099601900 is an apocalyptic number.

2099601900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2099601900 is an abundant number, since it is smaller than the sum of its proper divisors (5079797964).

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

2099601900 is a wasteful number, since it uses less digits than its factorization.

2099601900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212112 (or 212102 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 2099601900 is about 45821.4131165768. The cubic root of 2099601900 is about 1280.4982394663.

It can be divided in two parts, 2099601 and 900, that multiplied together give a square (1889640900 = 43470²).

The spelling of 2099601900 in words is "two billion, ninety-nine million, six hundred one thousand, nine hundred".