4659017981 has 2 divisors, whose sum is σ = 4659017982. Its totient is φ = 4659017980.

The previous prime is 4659017959. The next prime is 4659017989. The reversal of 4659017981 is 1897109564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3953265625 + 705752356 = 62875^2 + 26566^2 .

It is a cyclic number.

It is not a de Polignac number, because 4659017981 - 2⁶ = 4659017917 is a prime.

It is a super-2 number, since 2×4659017981² = 43412897094562632722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4659017989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2329508990 + 2329508991.

It is an arithmetic number, because the mean of its divisors is an integer number (2329508991).

Almost surely, 2^4659017981 is an apocalyptic number.

It is an amenable number.

4659017981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4659017981 is an equidigital number, since it uses as much as digits as its factorization.

4659017981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 4659017981 is about 68256.9995018826. Note that the first 3 decimals coincide. The cubic root of 4659017981 is about 1670.1858328826.

The spelling of 4659017981 in words is "four billion, six hundred fifty-nine million, seventeen thousand, nine hundred eighty-one".