209936748319 has 8 divisors (see below), whose sum is σ = 213904958112. Its totient is φ = 205968803040.

The previous prime is 209936748311. The next prime is 209936748349. The reversal of 209936748319 is 913847639902.

209936748319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 209936748319 - 2³ = 209936748311 is a prime.

It is a super-2 number, since 2×209936748319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209936748311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389174 + ... + 2475484.

It is an arithmetic number, because the mean of its divisors is an integer number (26738119764).

Almost surely, 2^209936748319 is an apocalyptic number.

209936748319 is a deficient number, since it is larger than the sum of its proper divisors (3968209793).

209936748319 is an equidigital number, since it uses as much as digits as its factorization.

209936748319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132257.

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 209936748319 in words is "two hundred nine billion, nine hundred thirty-six million, seven hundred forty-eight thousand, three hundred nineteen".