2185494271 has 2 divisors, whose sum is σ = 2185494272. Its totient is φ = 2185494270.

The previous prime is 2185494263. The next prime is 2185494277. The reversal of 2185494271 is 1724945812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2185494271 - 2³ = 2185494263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185494277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092747135 + 1092747136.

It is an arithmetic number, because the mean of its divisors is an integer number (1092747136).

Almost surely, 2^2185494271 is an apocalyptic number.

2185494271 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185494271 is an equidigital number, since it uses as much as digits as its factorization.

2185494271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 2185494271 is about 46749.2702723797. The cubic root of 2185494271 is about 1297.7266522920.

The spelling of 2185494271 in words is "two billion, one hundred eighty-five million, four hundred ninety-four thousand, two hundred seventy-one".