2120001791 has 2 divisors, whose sum is σ = 2120001792. Its totient is φ = 2120001790.

The previous prime is 2120001757. The next prime is 2120001809. The reversal of 2120001791 is 1971000212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120001791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120021791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060000895 + 1060000896.

It is an arithmetic number, because the mean of its divisors is an integer number (1060000896).

Almost surely, 2^2120001791 is an apocalyptic number.

2120001791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120001791 is an equidigital number, since it uses as much as digits as its factorization.

2120001791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 2120001791 is about 46043.4771818984. The cubic root of 2120001791 is about 1284.6320194695.

The spelling of 2120001791 in words is "two billion, one hundred twenty million, one thousand, seven hundred ninety-one".