1864393313 has 2 divisors, whose sum is σ = 1864393314. Its totient is φ = 1864393312.

The previous prime is 1864393303. The next prime is 1864393327. The reversal of 1864393313 is 3133934681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1724491729 + 139901584 = 41527^2 + 11828^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864393313 - 2¹⁸ = 1864131169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1864393303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932196656 + 932196657.

It is an arithmetic number, because the mean of its divisors is an integer number (932196657).

Almost surely, 2^1864393313 is an apocalyptic number.

It is an amenable number.

1864393313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864393313 is an equidigital number, since it uses as much as digits as its factorization.

1864393313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The square root of 1864393313 is about 43178.6210178139. The cubic root of 1864393313 is about 1230.7764531488.

The spelling of 1864393313 in words is "one billion, eight hundred sixty-four million, three hundred ninety-three thousand, three hundred thirteen".