1868303081 has 2 divisors, whose sum is σ = 1868303082. Its totient is φ = 1868303080.

The previous prime is 1868303069. The next prime is 1868303093. The reversal of 1868303081 is 1803038681.

It is a balanced prime because it is at equal distance from previous prime (1868303069) and next prime (1868303093).

It can be written as a sum of positive squares in only one way, i.e., 1347550681 + 520752400 = 36709^2 + 22820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868303081 - 2¹⁴ = 1868286697 is a prime.

It is a super-2 number, since 2×1868303081² = 6981112804948185122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1868303011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934151540 + 934151541.

It is an arithmetic number, because the mean of its divisors is an integer number (934151541).

Almost surely, 2^1868303081 is an apocalyptic number.

It is an amenable number.

1868303081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868303081 is an equidigital number, since it uses as much as digits as its factorization.

1868303081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1868303081 is about 43223.8716567593. The cubic root of 1868303081 is about 1231.6361949447.

The spelling of 1868303081 in words is "one billion, eight hundred sixty-eight million, three hundred three thousand, eighty-one".