2129940764 has 24 divisors (see below), whose sum is σ = 4266820320. Its totient is φ = 911344896.

The previous prime is 2129940739. The next prime is 2129940797. The reversal of 2129940764 is 4670499212.

It is a congruent number.

It is an unprimeable number.

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, 44369 + ... + 78920.

It is an arithmetic number, because the mean of its divisors is an integer number (177784180).

Almost surely, 2^2129940764 is an apocalyptic number.

It is an amenable number.

2129940764 is an abundant number, since it is smaller than the sum of its proper divisors (2136879556).

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

2129940764 is a wasteful number, since it uses less digits than its factorization.

2129940764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123917 (or 123915 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2129940764 is about 46151.2812823219. The cubic root of 2129940764 is about 1286.6364237420.

The spelling of 2129940764 in words is "two billion, one hundred twenty-nine million, nine hundred forty thousand, seven hundred sixty-four".