4945881601 has 2 divisors, whose sum is σ = 4945881602. Its totient is φ = 4945881600.

The previous prime is 4945881599. The next prime is 4945881617. The reversal of 4945881601 is 1061885494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4494361600 + 451520001 = 67040^2 + 21249^2 .

It is a cyclic number.

It is not a de Polignac number, because 4945881601 - 2¹ = 4945881599 is a prime.

It is a super-2 number, since 2×4945881601² = 48923489622220646402, which contains 22 as substring.

Together with 4945881599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4945881631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472940800 + 2472940801.

It is an arithmetic number, because the mean of its divisors is an integer number (2472940801).

Almost surely, 2^4945881601 is an apocalyptic number.

It is an amenable number.

4945881601 is a deficient number, since it is larger than the sum of its proper divisors (1).

4945881601 is an equidigital number, since it uses as much as digits as its factorization.

4945881601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 4945881601 is about 70326.9621198015. The cubic root of 4945881601 is about 1703.7841425794.

The spelling of 4945881601 in words is "four billion, nine hundred forty-five million, eight hundred eighty-one thousand, six hundred one".