6891213203 has 4 divisors (see below), whose sum is σ = 7875672240. Its totient is φ = 5906754168.

The previous prime is 6891213193. The next prime is 6891213209. The reversal of 6891213203 is 3023121986.

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

It is not a de Polignac number, because 6891213203 - 2⁴ = 6891213187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6891213209) 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, 492229508 + ... + 492229521.

It is an arithmetic number, because the mean of its divisors is an integer number (1968918060).

Almost surely, 2^6891213203 is an apocalyptic number.

6891213203 is a deficient number, since it is larger than the sum of its proper divisors (984459037).

6891213203 is an equidigital number, since it uses as much as digits as its factorization.

6891213203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984459036.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6891213203 is about 83013.3314775404. The cubic root of 6891213203 is about 1902.9697972798.

The spelling of 6891213203 in words is "six billion, eight hundred ninety-one million, two hundred thirteen thousand, two hundred three".