2100875500 has 24 divisors (see below), whose sum is σ = 4588313184. Its totient is φ = 840350000.

The previous prime is 2100875473. The next prime is 2100875509. The reversal of 2100875500 is 55780012.

It is not an unprimeable number, because it can be changed into a prime (2100875509) 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 7 ways as a sum of consecutive naturals, for example, 2100376 + ... + 2101375.

It is an arithmetic number, because the mean of its divisors is an integer number (191179716).

Almost surely, 2^2100875500 is an apocalyptic number.

2100875500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100875500 is an abundant number, since it is smaller than the sum of its proper divisors (2487437684).

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

2100875500 is a wasteful number, since it uses less digits than its factorization.

2100875500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201770 (or 4201758 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2100875500 is about 45835.3084422915. The cubic root of 2100875500 is about 1280.7571001131.

The spelling of 2100875500 in words is "two billion, one hundred million, eight hundred seventy-five thousand, five hundred".