1868310018 has 12 divisors (see below), whose sum is σ = 4048005078. Its totient is φ = 622770000.

The previous prime is 1868310001. The next prime is 1868310023. The reversal of 1868310018 is 8100138681.

It can be written as a sum of positive squares in only one way, i.e., 1723661289 + 144648729 = 41517^2 + 12027^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51897483 + ... + 51897518.

Almost surely, 2^1868310018 is an apocalyptic number.

1868310018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1868310018 is an abundant number, since it is smaller than the sum of its proper divisors (2179695060).

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

1868310018 is a wasteful number, since it uses less digits than its factorization.

1868310018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103795009 (or 103795006 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1868310018 is about 43223.9519016945. The cubic root of 1868310018 is about 1231.6377192958.

Adding to 1868310018 its reverse (8100138681), we get a palindrome (9968448699).

The spelling of 1868310018 in words is "one billion, eight hundred sixty-eight million, three hundred ten thousand, eighteen".