6912790891 has 4 divisors (see below), whose sum is σ = 6913559392. Its totient is φ = 6912022392.

The previous prime is 6912790889. The next prime is 6912790939. The reversal of 6912790891 is 1980972196.

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

It is a cyclic number.

It is not a de Polignac number, because 6912790891 - 2¹ = 6912790889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6912797891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370596 + ... + 388801.

It is an arithmetic number, because the mean of its divisors is an integer number (1728389848).

Almost surely, 2^6912790891 is an apocalyptic number.

6912790891 is a deficient number, since it is larger than the sum of its proper divisors (768501).

6912790891 is an equidigital number, since it uses as much as digits as its factorization.

6912790891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768500.

The product of its (nonzero) digits is 489888, while the sum is 52.

The square root of 6912790891 is about 83143.1950973740. The cubic root of 6912790891 is about 1904.9539135959.

The spelling of 6912790891 in words is "six billion, nine hundred twelve million, seven hundred ninety thousand, eight hundred ninety-one".