1836868351697 has 2 divisors, whose sum is σ = 1836868351698. Its totient is φ = 1836868351696.

The previous prime is 1836868351639. The next prime is 1836868351709. The reversal of 1836868351697 is 7961538686381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1834063484176 + 2804867521 = 1354276^2 + 52961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1836868351697 - 2²⁸ = 1836599916241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1836868351697.

It is not a weakly prime, because it can be changed into another prime (1836868350697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 918434175848 + 918434175849.

It is an arithmetic number, because the mean of its divisors is an integer number (918434175849).

Almost surely, 2^{1836868351697} is an apocalyptic number.

It is an amenable number.

1836868351697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1836868351697 is an equidigital number, since it uses as much as digits as its factorization.

1836868351697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313528320, while the sum is 71.

The spelling of 1836868351697 in words is "one trillion, eight hundred thirty-six billion, eight hundred sixty-eight million, three hundred fifty-one thousand, six hundred ninety-seven".