2129890312 has 16 divisors (see below), whose sum is σ = 4356594000. Its totient is φ = 968131920.

The previous prime is 2129890261. The next prime is 2129890313. The reversal of 2129890312 is 2130989212.

It is not an unprimeable number, because it can be changed into a prime (2129890313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12101562 + ... + 12101737.

It is an arithmetic number, because the mean of its divisors is an integer number (272287125).

Almost surely, 2^2129890312 is an apocalyptic number.

2129890312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2129890312 is an abundant number, since it is smaller than the sum of its proper divisors (2226703688).

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

2129890312 is a wasteful number, since it uses less digits than its factorization.

2129890312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24203316 (or 24203312 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 2129890312 is about 46150.7346853764. The cubic root of 2129890312 is about 1286.6262647907.

The spelling of 2129890312 in words is "two billion, one hundred twenty-nine million, eight hundred ninety thousand, three hundred twelve".