2073128891 has 2 divisors, whose sum is σ = 2073128892. Its totient is φ = 2073128890.

The previous prime is 2073128881. The next prime is 2073128921. The reversal of 2073128891 is 1988213702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2073128891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2073128821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036564445 + 1036564446.

It is an arithmetic number, because the mean of its divisors is an integer number (1036564446).

Almost surely, 2^2073128891 is an apocalyptic number.

2073128891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2073128891 is an equidigital number, since it uses as much as digits as its factorization.

2073128891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 2073128891 is about 45531.6251741578. The cubic root of 2073128891 is about 1275.0937039424.

The spelling of 2073128891 in words is "two billion, seventy-three million, one hundred twenty-eight thousand, eight hundred ninety-one".