3665437537 has 2 divisors, whose sum is σ = 3665437538. Its totient is φ = 3665437536.

The previous prime is 3665437493. The next prime is 3665437543. The reversal of 3665437537 is 7357345663.

It is a happy number.

3665437537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2816531041 + 848906496 = 53071^2 + 29136^2 .

It is a cyclic number.

It is not a de Polignac number, because 3665437537 - 2¹¹ = 3665435489 is a prime.

It is not a weakly prime, because it can be changed into another prime (3665437037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832718768 + 1832718769.

It is an arithmetic number, because the mean of its divisors is an integer number (1832718769).

Almost surely, 2^3665437537 is an apocalyptic number.

It is an amenable number.

3665437537 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665437537 is an equidigital number, since it uses as much as digits as its factorization.

3665437537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 49.

The square root of 3665437537 is about 60542.8570270680. The cubic root of 3665437537 is about 1541.8493464181.

The spelling of 3665437537 in words is "three billion, six hundred sixty-five million, four hundred thirty-seven thousand, five hundred thirty-seven".