3318317861 has 2 divisors, whose sum is σ = 3318317862. Its totient is φ = 3318317860.

The previous prime is 3318317831. The next prime is 3318317867. The reversal of 3318317861 is 1687138133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2754255361 + 564062500 = 52481^2 + 23750^2 .

It is a cyclic number.

It is not a de Polignac number, because 3318317861 - 2⁶ = 3318317797 is a prime.

It is a super-2 number, since 2×3318317861² = 22022466853263230642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3318317867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1659158930 + 1659158931.

It is an arithmetic number, because the mean of its divisors is an integer number (1659158931).

Almost surely, 2^3318317861 is an apocalyptic number.

It is an amenable number.

3318317861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3318317861 is an equidigital number, since it uses as much as digits as its factorization.

3318317861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 3318317861 is about 57604.8423398589. The cubic root of 3318317861 is about 1491.5551921079. Note that the first 3 decimals are identical.

The spelling of 3318317861 in words is "three billion, three hundred eighteen million, three hundred seventeen thousand, eight hundred sixty-one".