2185019827 has 2 divisors, whose sum is σ = 2185019828. Its totient is φ = 2185019826.

The previous prime is 2185019807. The next prime is 2185019831. The reversal of 2185019827 is 7289105812.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2185019827 is a prime.

It is not a weakly prime, because it can be changed into another prime (2185019807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092509913 + 1092509914.

It is an arithmetic number, because the mean of its divisors is an integer number (1092509914).

Almost surely, 2^2185019827 is an apocalyptic number.

2185019827 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185019827 is an equidigital number, since it uses as much as digits as its factorization.

2185019827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 2185019827 is about 46744.1956503693. The cubic root of 2185019827 is about 1297.6327386496.

The spelling of 2185019827 in words is "two billion, one hundred eighty-five million, nineteen thousand, eight hundred twenty-seven".