18868514 has 16 divisors (see below), whose sum is σ = 32635008. Its totient is φ = 8014272.

The previous prime is 18868513. The next prime is 18868519. The reversal of 18868514 is 41586881.

It is not an unprimeable number, because it can be changed into a prime (18868511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4382 + ... + 7545.

It is an arithmetic number, because the mean of its divisors is an integer number (2039688).

Almost surely, 2^18868514 is an apocalyptic number.

18868514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18868514 is a deficient number, since it is larger than the sum of its proper divisors (13766494).

18868514 is a wasteful number, since it uses less digits than its factorization.

18868514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12049.

The product of its digits is 61440, while the sum is 41.

The square root of 18868514 is about 4343.7902803888. The cubic root of 18868514 is about 266.2232000768.

The spelling of 18868514 in words is "eighteen million, eight hundred sixty-eight thousand, five hundred fourteen".