19008018 has 24 divisors (see below), whose sum is σ = 43352400. Its totient is φ = 6002424.

The previous prime is 19008013. The next prime is 19008043. The reversal of 19008018 is 81080091.

It is a super-2 number, since 2×19008018² = 722609496576648, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19007982 and 19008000.

It is not an unprimeable number, because it can be changed into a prime (19008013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27448 + ... + 28131.

It is an arithmetic number, because the mean of its divisors is an integer number (1806350).

Almost surely, 2^19008018 is an apocalyptic number.

19008018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19008018 is an abundant number, since it is smaller than the sum of its proper divisors (24344382).

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

19008018 is a wasteful number, since it uses less digits than its factorization.

19008018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55606 (or 55603 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 19008018 is about 4359.8185742070. The cubic root of 19008018 is about 266.8776951100.

The spelling of 19008018 in words is "nineteen million, eight thousand, eighteen".