2065694387 has 2 divisors, whose sum is σ = 2065694388. Its totient is φ = 2065694386.

The previous prime is 2065694341. The next prime is 2065694413. The reversal of 2065694387 is 7834965602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2065694387 - 2¹⁴ = 2065678003 is a prime.

It is not a weakly prime, because it can be changed into another prime (2065694317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032847193 + 1032847194.

It is an arithmetic number, because the mean of its divisors is an integer number (1032847194).

Almost surely, 2^2065694387 is an apocalyptic number.

2065694387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2065694387 is an equidigital number, since it uses as much as digits as its factorization.

2065694387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 2065694387 is about 45449.9107479872. The cubic root of 2065694387 is about 1273.5676622019.

The spelling of 2065694387 in words is "two billion, sixty-five million, six hundred ninety-four thousand, three hundred eighty-seven".