3665437493 has 2 divisors, whose sum is σ = 3665437494. Its totient is φ = 3665437492.

The previous prime is 3665437483. The next prime is 3665437537. The reversal of 3665437493 is 3947345663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3629701009 + 35736484 = 60247^2 + 5978^2 .

It is a cyclic number.

It is not a de Polignac number, because 3665437493 - 2⁶ = 3665437429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3665437483) 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, 1832718746 + 1832718747.

It is an arithmetic number, because the mean of its divisors is an integer number (1832718747).

Almost surely, 2^3665437493 is an apocalyptic number.

It is an amenable number.

3665437493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665437493 is an equidigital number, since it uses as much as digits as its factorization.

3665437493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 50.

The square root of 3665437493 is about 60542.8566636891. The cubic root of 3665437493 is about 1541.8493402486.

It can be divided in two parts, 36654 and 37493, that added together give a palindrome (74147).

The spelling of 3665437493 in words is "three billion, six hundred sixty-five million, four hundred thirty-seven thousand, four hundred ninety-three".