1856063164369 has 2 divisors, whose sum is σ = 1856063164370. Its totient is φ = 1856063164368.

The previous prime is 1856063164343. The next prime is 1856063164381. The reversal of 1856063164369 is 9634613606581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1400168124369 + 455895040000 = 1183287^2 + 675200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1856063164369 - 2¹³ = 1856063156177 is a prime.

It is a super-2 number, since 2×1856063164369² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1856063164169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 928031582184 + 928031582185.

It is an arithmetic number, because the mean of its divisors is an integer number (928031582185).

Almost surely, 2^{1856063164369} is an apocalyptic number.

It is an amenable number.

1856063164369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1856063164369 is an equidigital number, since it uses as much as digits as its factorization.

1856063164369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16796160, while the sum is 58.

The spelling of 1856063164369 in words is "one trillion, eight hundred fifty-six billion, sixty-three million, one hundred sixty-four thousand, three hundred sixty-nine".