1818031650168 has 64 divisors (see below), whose sum is σ = 4641654391200. Its totient is φ = 593268684800.

The previous prime is 1818031650133. The next prime is 1818031650191. The reversal of 1818031650168 is 8610561308181.

It is a happy number.

It is a super-2 number, since 2×1818031650168² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3997821 + ... + 4429292.

Almost surely, 2^{1818031650168} is an apocalyptic number.

It is an amenable number.

1818031650168 is an abundant number, since it is smaller than the sum of its proper divisors (2823622741032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1818031650168 is a wasteful number, since it uses less digits than its factorization.

1818031650168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8427312 (or 8427308 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 48.

The spelling of 1818031650168 in words is "one trillion, eight hundred eighteen billion, thirty-one million, six hundred fifty thousand, one hundred sixty-eight".