1838517216868 has 6 divisors (see below), whose sum is σ = 3217405129526. Its totient is φ = 919258608432.

The previous prime is 1838517216793. The next prime is 1838517216883. The reversal of 1838517216868 is 8686127158381.

It can be written as a sum of positive squares in only one way, i.e., 1768203148644 + 70314068224 = 1329738^2 + 265168^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229814652105 + ... + 229814652112.

Almost surely, 2^{1838517216868} is an apocalyptic number.

It is an amenable number.

1838517216868 is a deficient number, since it is larger than the sum of its proper divisors (1378887912658).

1838517216868 is a wasteful number, since it uses less digits than its factorization.

1838517216868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459629304221 (or 459629304219 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 64.

The spelling of 1838517216868 in words is "one trillion, eight hundred thirty-eight billion, five hundred seventeen million, two hundred sixteen thousand, eight hundred sixty-eight".