3318931818073 has 2 divisors, whose sum is σ = 3318931818074. Its totient is φ = 3318931818072.

The previous prime is 3318931818053. The next prime is 3318931818101. The reversal of 3318931818073 is 3708181398133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3296356154569 + 22575663504 = 1815587^2 + 150252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3318931818073 is a prime.

It is a super-2 number, since 2×3318931818073² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3318931818053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1659465909036 + 1659465909037.

It is an arithmetic number, because the mean of its divisors is an integer number (1659465909037).

Almost surely, 2^{3318931818073} is an apocalyptic number.

It is an amenable number.

3318931818073 is a deficient number, since it is larger than the sum of its proper divisors (1).

3318931818073 is an equidigital number, since it uses as much as digits as its factorization.

3318931818073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 3318931818073 in words is "three trillion, three hundred eighteen billion, nine hundred thirty-one million, eight hundred eighteen thousand, seventy-three".