2109134720 has 256 divisors, whose sum is σ = 6354616320. Its totient is φ = 650280960.

The previous prime is 2109134711. The next prime is 2109134737. The reversal of 2109134720 is 274319012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6258392 + ... + 6258728.

It is an arithmetic number, because the mean of its divisors is an integer number (24822720).

Almost surely, 2^2109134720 is an apocalyptic number.

2109134720 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 2109134720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3177308160).

2109134720 is an abundant number, since it is smaller than the sum of its proper divisors (4245481600).

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

2109134720 is a wasteful number, since it uses less digits than its factorization.

2109134720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 2109134720 is about 45925.3167653746. The cubic root of 2109134720 is about 1282.4332620967.

The spelling of 2109134720 in words is "two billion, one hundred nine million, one hundred thirty-four thousand, seven hundred twenty".