2129954346 has 128 divisors (see below), whose sum is σ = 5346190080. Its totient is φ = 624153600.

The previous prime is 2129954291. The next prime is 2129954363. The reversal of 2129954346 is 6434599212.

2129954346 is a `hidden beast` number, since 2 + 12 + 99 + 543 + 4 + 6 = 666.

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 63 ways as a sum of consecutive naturals, for example, 1236766 + ... + 1238486.

It is an arithmetic number, because the mean of its divisors is an integer number (41767110).

Almost surely, 2^2129954346 is an apocalyptic number.

2129954346 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2129954346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2673095040).

2129954346 is an abundant number, since it is smaller than the sum of its proper divisors (3216235734).

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

2129954346 is a wasteful number, since it uses less digits than its factorization.

2129954346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829 (or 1823 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 2129954346 is about 46151.4284285980. The cubic root of 2129954346 is about 1286.6391585690.

The spelling of 2129954346 in words is "two billion, one hundred twenty-nine million, nine hundred fifty-four thousand, three hundred forty-six".