3807138558481 has 2 divisors, whose sum is σ = 3807138558482. Its totient is φ = 3807138558480.

The previous prime is 3807138558469. The next prime is 3807138558527. The reversal of 3807138558481 is 1848558317083.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2033404700625 + 1773733857856 = 1425975^2 + 1331816^2 .

It is a cyclic number.

It is not a de Polignac number, because 3807138558481 - 2⁵ = 3807138558449 is a prime.

It is a super-2 number, since 2×3807138558481² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3807138553481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1903569279240 + 1903569279241.

It is an arithmetic number, because the mean of its divisors is an integer number (1903569279241).

Almost surely, 2^{3807138558481} is an apocalyptic number.

It is an amenable number.

3807138558481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3807138558481 is an equidigital number, since it uses as much as digits as its factorization.

3807138558481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 3807138558481 in words is "three trillion, eight hundred seven billion, one hundred thirty-eight million, five hundred fifty-eight thousand, four hundred eighty-one".