3546386681 has 2 divisors, whose sum is σ = 3546386682. Its totient is φ = 3546386680.

The previous prime is 3546386671. The next prime is 3546386699. The reversal of 3546386681 is 1866836453.

3546386681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3394111081 + 152275600 = 58259^2 + 12340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3546386681 is a prime.

It is a super-2 number, since 2×3546386681² = 25153716982348391522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3546386621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1773193340 + 1773193341.

It is an arithmetic number, because the mean of its divisors is an integer number (1773193341).

Almost surely, 2^3546386681 is an apocalyptic number.

It is an amenable number.

3546386681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3546386681 is an equidigital number, since it uses as much as digits as its factorization.

3546386681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 50.

The square root of 3546386681 is about 59551.5464198874. The cubic root of 3546386681 is about 1524.9725597141.

The spelling of 3546386681 in words is "three billion, five hundred forty-six million, three hundred eighty-six thousand, six hundred eighty-one".