1864205579473 has 2 divisors, whose sum is σ = 1864205579474. Its totient is φ = 1864205579472.

The previous prime is 1864205579471. The next prime is 1864205579479. The reversal of 1864205579473 is 3749755024681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1201726790289 + 662478789184 = 1096233^2 + 813928^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864205579473 - 2¹ = 1864205579471 is a prime.

Together with 1864205579471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1864205579471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932102789736 + 932102789737.

It is an arithmetic number, because the mean of its divisors is an integer number (932102789737).

It is a 1-persistent number, because it is pandigital, but 2⋅1864205579473 = 3728411158946 is not.

Almost surely, 2^{1864205579473} is an apocalyptic number.

It is an amenable number.

1864205579473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864205579473 is an equidigital number, since it uses as much as digits as its factorization.

1864205579473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50803200, while the sum is 61.

The spelling of 1864205579473 in words is "one trillion, eight hundred sixty-four billion, two hundred five million, five hundred seventy-nine thousand, four hundred seventy-three".