4945332681 has 12 divisors (see below), whose sum is σ = 7150582452. Its totient is φ = 3293508096.

The previous prime is 4945332599. The next prime is 4945332697. The reversal of 4945332681 is 1862335494.

4945332681 is a `hidden beast` number, since 4 + 94 + 533 + 26 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4314519225 + 630813456 = 65685^2 + 25116^2 .

It is not a de Polignac number, because 4945332681 - 2¹⁵ = 4945299913 is a prime.

It is a super-2 number, since 2×4945332681² = 48912630651533295522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4945332781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272416 + ... + 290001.

It is an arithmetic number, because the mean of its divisors is an integer number (595881871).

Almost surely, 2^4945332681 is an apocalyptic number.

It is an amenable number.

4945332681 is a deficient number, since it is larger than the sum of its proper divisors (2205249771).

4945332681 is a wasteful number, since it uses less digits than its factorization.

4945332681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563400 (or 563397 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 4945332681 is about 70323.0593831070. The cubic root of 4945332681 is about 1703.7211086002.

The spelling of 4945332681 in words is "four billion, nine hundred forty-five million, three hundred thirty-two thousand, six hundred eighty-one".