2125164191 has 2 divisors, whose sum is σ = 2125164192. Its totient is φ = 2125164190.

The previous prime is 2125164179. The next prime is 2125164199. The reversal of 2125164191 is 1914615212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2125164191 - 2¹⁴ = 2125147807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125164199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062582095 + 1062582096.

It is an arithmetic number, because the mean of its divisors is an integer number (1062582096).

Almost surely, 2^2125164191 is an apocalyptic number.

2125164191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125164191 is an equidigital number, since it uses as much as digits as its factorization.

2125164191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 32.

The square root of 2125164191 is about 46099.5031535048. The cubic root of 2125164191 is about 1285.6739067348.

The spelling of 2125164191 in words is "two billion, one hundred twenty-five million, one hundred sixty-four thousand, one hundred ninety-one".