1001000018 has 32 divisors (see below), whose sum is σ = 1672617600. Its totient is φ = 447080704.

The previous prime is 1000999949. The next prime is 1001000027. The reversal of 1001000018 is 8100001001.

It is a junction number, because it is equal to n+sod(n) for n = 1000999972 and 1001000008.

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, 49571 + ... + 66777.

It is an arithmetic number, because the mean of its divisors is an integer number (52269300).

Almost surely, 2^1001000018 is an apocalyptic number.

1001000018 is a deficient number, since it is larger than the sum of its proper divisors (671617582).

1001000018 is a wasteful number, since it uses less digits than its factorization.

1001000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1001000018 is about 31638.5843235755. The cubic root of 1001000018 is about 1000.3332282799. Note that the first 3 decimals are identical.

Adding to 1001000018 its reverse (8100001001), we get a palindrome (9101001019).

The spelling of 1001000018 in words is "one billion, one million, eighteen", and thus it is an aban number and an uban number.