4705745981 has 2 divisors, whose sum is σ = 4705745982. Its totient is φ = 4705745980.

The previous prime is 4705745977. The next prime is 4705745999. The reversal of 4705745981 is 1895475074.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2523454756 + 2182291225 = 50234^2 + 46715^2 .

It is a cyclic number.

It is not a de Polignac number, because 4705745981 - 2² = 4705745977 is a prime.

It is a super-2 number, since 2×4705745981² = 44288090475395304722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4705795981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2352872990 + 2352872991.

It is an arithmetic number, because the mean of its divisors is an integer number (2352872991).

Almost surely, 2^4705745981 is an apocalyptic number.

It is an amenable number.

4705745981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4705745981 is an equidigital number, since it uses as much as digits as its factorization.

4705745981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The square root of 4705745981 is about 68598.4400770163. The cubic root of 4705745981 is about 1675.7510235442.

The spelling of 4705745981 in words is "four billion, seven hundred five million, seven hundred forty-five thousand, nine hundred eighty-one".