3261006481 has 2 divisors, whose sum is σ = 3261006482. Its totient is φ = 3261006480.

The previous prime is 3261006443. The next prime is 3261006491. The reversal of 3261006481 is 1846001623.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2007846481 + 1253160000 = 44809^2 + 35400^2 .

It is an emirp because it is prime and its reverse (1846001623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3261006481 - 2¹¹ = 3261004433 is a prime.

It is a super-4 number, since 4×3261006481⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (3261006421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630503240 + 1630503241.

It is an arithmetic number, because the mean of its divisors is an integer number (1630503241).

Almost surely, 2^3261006481 is an apocalyptic number.

It is an amenable number.

3261006481 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261006481 is an equidigital number, since it uses as much as digits as its factorization.

3261006481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 3261006481 is about 57105.2228872281. Note that the first 3 decimals coincide. The cubic root of 3261006481 is about 1482.9182863635.

The spelling of 3261006481 in words is "three billion, two hundred sixty-one million, six thousand, four hundred eighty-one".