2129564730 has 32 divisors (see below), whose sum is σ = 5113741248. Its totient is φ = 567574400.

The previous prime is 2129564729. The next prime is 2129564737. The reversal of 2129564730 is 374659212.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2129564737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39550 + ... + 76310.

It is an arithmetic number, because the mean of its divisors is an integer number (159804414).

Almost surely, 2^2129564730 is an apocalyptic number.

2129564730 is an abundant number, since it is smaller than the sum of its proper divisors (2984176518).

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

2129564730 is a wasteful number, since it uses less digits than its factorization.

2129564730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38702.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2129564730 is about 46147.2071744326. The cubic root of 2129564730 is about 1286.5607021501.

The spelling of 2129564730 in words is "two billion, one hundred twenty-nine million, five hundred sixty-four thousand, seven hundred thirty".