1852555802497 has 2 divisors, whose sum is σ = 1852555802498. Its totient is φ = 1852555802496.

The previous prime is 1852555802473. The next prime is 1852555802543. The reversal of 1852555802497 is 7942085552581.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1724242114816 + 128313687681 = 1313104^2 + 358209^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1852555802497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1852555802467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 926277901248 + 926277901249.

It is an arithmetic number, because the mean of its divisors is an integer number (926277901249).

Almost surely, 2^{1852555802497} is an apocalyptic number.

It is an amenable number.

1852555802497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1852555802497 is an equidigital number, since it uses as much as digits as its factorization.

1852555802497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320000, while the sum is 61.

The spelling of 1852555802497 in words is "one trillion, eight hundred fifty-two billion, five hundred fifty-five million, eight hundred two thousand, four hundred ninety-seven".