3640220293 has 2 divisors, whose sum is σ = 3640220294. Its totient is φ = 3640220292.

The previous prime is 3640220267. The next prime is 3640220299. The reversal of 3640220293 is 3920220463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2042859204 + 1597361089 = 45198^2 + 39967^2 .

It is an emirp because it is prime and its reverse (3920220463) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640220293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3640220299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820110146 + 1820110147.

It is an arithmetic number, because the mean of its divisors is an integer number (1820110147).

Almost surely, 2^3640220293 is an apocalyptic number.

It is an amenable number.

3640220293 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640220293 is an equidigital number, since it uses as much as digits as its factorization.

3640220293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 3640220293 is about 60334.2381488322. The cubic root of 3640220293 is about 1538.3053677193.

The spelling of 3640220293 in words is "three billion, six hundred forty million, two hundred twenty thousand, two hundred ninety-three".