2129208356 has 24 divisors (see below), whose sum is σ = 4075609440. Its totient is φ = 965260800.

The previous prime is 2129208349. The next prime is 2129208359. The reversal of 2129208356 is 6538029212.

It is not an unprimeable number, because it can be changed into a prime (2129208359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47165 + ... + 80516.

It is an arithmetic number, because the mean of its divisors is an integer number (169817060).

Almost surely, 2^2129208356 is an apocalyptic number.

It is an amenable number.

2129208356 is a deficient number, since it is larger than the sum of its proper divisors (1946401084).

2129208356 is a wasteful number, since it uses less digits than its factorization.

2129208356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128075 (or 128073 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2129208356 is about 46143.3457391204. The cubic root of 2129208356 is about 1286.4889312454.

The spelling of 2129208356 in words is "two billion, one hundred twenty-nine million, two hundred eight thousand, three hundred fifty-six".