18968810 has 32 divisors (see below), whose sum is σ = 39422592. Its totient is φ = 6436800.

The previous prime is 18968797. The next prime is 18968819. The reversal of 18968810 is 1886981.

It is a super-2 number, since 2×18968810² = 719631505632200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18968819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5729 + ... + 8411.

It is an arithmetic number, because the mean of its divisors is an integer number (1231956).

Almost surely, 2^18968810 is an apocalyptic number.

18968810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18968810 is an abundant number, since it is smaller than the sum of its proper divisors (20453782).

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

18968810 is a wasteful number, since it uses less digits than its factorization.

18968810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798.

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 18968810 is about 4355.3197356796. The cubic root of 18968810 is about 266.6940718363.

The spelling of 18968810 in words is "eighteen million, nine hundred sixty-eight thousand, eight hundred ten".