2100740544 has 294 divisors, whose sum is σ = 7251561824. Its totient is φ = 580849920.

The previous prime is 2100740531. The next prime is 2100740549. The reversal of 2100740544 is 4450470012.

2100740544 is a `hidden beast` number, since 210 + 0 + 7 + 405 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (294).

It is a super-2 number, since 2×2100740544² = 8826221666410831872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100740549) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 67765809 + ... + 67765839.

Almost surely, 2^2100740544 is an apocalyptic number.

2100740544 is a gapful number since it is divisible by the number (24) 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 2100740544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3625780912).

2100740544 is an abundant number, since it is smaller than the sum of its proper divisors (5150821280).

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

2100740544 is an frugal number, since it uses more digits than its factorization.

2100740544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 43 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 2100740544 is about 45833.8362348167. The cubic root of 2100740544 is about 1280.7296751092.

The spelling of 2100740544 in words is "two billion, one hundred million, seven hundred forty thousand, five hundred forty-four".