1868500365643 has 2 divisors, whose sum is σ = 1868500365644. Its totient is φ = 1868500365642.

The previous prime is 1868500365631. The next prime is 1868500365661. The reversal of 1868500365643 is 3465630058681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1868500365643 - 2⁹ = 1868500365131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1868500365673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934250182821 + 934250182822.

It is an arithmetic number, because the mean of its divisors is an integer number (934250182822).

Almost surely, 2^{1868500365643} is an apocalyptic number.

1868500365643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868500365643 is an equidigital number, since it uses as much as digits as its factorization.

1868500365643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 1868500365643 in words is "one trillion, eight hundred sixty-eight billion, five hundred million, three hundred sixty-five thousand, six hundred forty-three".