3249181681 has 8 divisors (see below), whose sum is σ = 3269526120. Its totient is φ = 3228855552.

The previous prime is 3249181679. The next prime is 3249181693. The reversal of 3249181681 is 1861819423.

3249181681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1508623281 + 1740558400 = 38841^2 + 41720^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3249181681 - 2¹ = 3249181679 is a prime.

It is a super-2 number, since 2×3249181681² = 21114363192291971522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3249181631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570315 + ... + 575983.

It is an arithmetic number, because the mean of its divisors is an integer number (408690765).

Almost surely, 2^3249181681 is an apocalyptic number.

It is an amenable number.

3249181681 is a deficient number, since it is larger than the sum of its proper divisors (20344439).

3249181681 is a wasteful number, since it uses less digits than its factorization.

3249181681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9155.

The product of its digits is 82944, while the sum is 43.

The square root of 3249181681 is about 57001.5936707036. The cubic root of 3249181681 is about 1481.1237023925.

The spelling of 3249181681 in words is "three billion, two hundred forty-nine million, one hundred eighty-one thousand, six hundred eighty-one".