3638081077 has 2 divisors, whose sum is σ = 3638081078. Its totient is φ = 3638081076.

The previous prime is 3638081047. The next prime is 3638081081. The reversal of 3638081077 is 7701808363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3406006321 + 232074756 = 58361^2 + 15234^2 .

It is an emirp because it is prime and its reverse (7701808363) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3638081077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3638081017) 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, 1819040538 + 1819040539.

It is an arithmetic number, because the mean of its divisors is an integer number (1819040539).

Almost surely, 2^3638081077 is an apocalyptic number.

It is an amenable number.

3638081077 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638081077 is an equidigital number, since it uses as much as digits as its factorization.

3638081077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 3638081077 is about 60316.5075000203. The cubic root of 3638081077 is about 1538.0039745783.

The spelling of 3638081077 in words is "three billion, six hundred thirty-eight million, eighty-one thousand, seventy-seven".