209334830804 has 18 divisors (see below), whose sum is σ = 402666793242. Its totient is φ = 95152195600.

The previous prime is 209334830729. The next prime is 209334830819. The reversal of 209334830804 is 408038433902.

It can be written as a sum of positive squares in only one way, i.e., 154489874704 + 54844956100 = 393052^2 + 234190^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

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 5 ways as a sum of consecutive naturals, for example, 216254507 + ... + 216255474.

Almost surely, 2^209334830804 is an apocalyptic number.

It is an amenable number.

209334830804 is a deficient number, since it is larger than the sum of its proper divisors (193331962438).

209334830804 is a wasteful number, since it uses less digits than its factorization.

209334830804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432510007 (or 432509994 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 209334830804 in words is "two hundred nine billion, three hundred thirty-four million, eight hundred thirty thousand, eight hundred four".