3640081559 has 2 divisors, whose sum is σ = 3640081560. Its totient is φ = 3640081558.

The previous prime is 3640081457. The next prime is 3640081603. The reversal of 3640081559 is 9551800463.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3640081559 - 2²⁰ = 3639032983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3640080559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820040779 + 1820040780.

It is an arithmetic number, because the mean of its divisors is an integer number (1820040780).

Almost surely, 2^3640081559 is an apocalyptic number.

3640081559 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640081559 is an equidigital number, since it uses as much as digits as its factorization.

3640081559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 3640081559 is about 60333.0884258381. The cubic root of 3640081559 is about 1538.2858251321.

The spelling of 3640081559 in words is "three billion, six hundred forty million, eighty-one thousand, five hundred fifty-nine".