2100750000 has 140 divisors (see below), whose sum is σ = 6786006888. Its totient is φ = 560000000.

The previous prime is 2100749977. The next prime is 2100750013. The reversal of 2100750000 is 570012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 748600 + ... + 751400.

Almost surely, 2^2100750000 is an apocalyptic number.

2100750000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3393003444).

2100750000 is an abundant number, since it is smaller than the sum of its proper divisors (4685256888).

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

2100750000 is an frugal number, since it uses more digits than its factorization.

2100750000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842 (or 2811 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 2100750000 is about 45833.9393899324. The cubic root of 2100750000 is about 1280.7315967429.

The spelling of 2100750000 in words is "two billion, one hundred million, seven hundred fifty thousand".