209027946983 has 4 divisors (see below), whose sum is σ = 210945634680. Its totient is φ = 207110259288.

The previous prime is 209027946971. The next prime is 209027947027. The reversal of 209027946983 is 389649720902.

209027946983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209027946983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209027946943) 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 3 ways as a sum of consecutive naturals, for example, 958843685 + ... + 958843902.

It is an arithmetic number, because the mean of its divisors is an integer number (52736408670).

Almost surely, 2^209027946983 is an apocalyptic number.

209027946983 is a deficient number, since it is larger than the sum of its proper divisors (1917687697).

209027946983 is a wasteful number, since it uses less digits than its factorization.

209027946983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917687696.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 209027946983 in words is "two hundred nine billion, twenty-seven million, nine hundred forty-six thousand, nine hundred eighty-three".