3668637803837 has 2 divisors, whose sum is σ = 3668637803838. Its totient is φ = 3668637803836.

The previous prime is 3668637803783. The next prime is 3668637803861. The reversal of 3668637803837 is 7383087368663.

Together with previous prime (3668637803783) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3651848382361 + 16789421476 = 1910981^2 + 129574^2 .

It is an emirp because it is prime and its reverse (7383087368663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3668637803837 - 2⁸ = 3668637803581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3668637803867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834318901918 + 1834318901919.

It is an arithmetic number, because the mean of its divisors is an integer number (1834318901919).

Almost surely, 2^{3668637803837} is an apocalyptic number.

It is an amenable number.

3668637803837 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668637803837 is an equidigital number, since it uses as much as digits as its factorization.

3668637803837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 438939648, while the sum is 68.

The spelling of 3668637803837 in words is "three trillion, six hundred sixty-eight billion, six hundred thirty-seven million, eight hundred three thousand, eight hundred thirty-seven".