18866064 has 40 divisors (see below), whose sum is σ = 55700800. Its totient is φ = 5390208.

The previous prime is 18866051. The next prime is 18866077. The reversal of 18866064 is 46066881.

It is an interprime number because it is at equal distance from previous prime (18866051) and next prime (18866077).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27739 + ... + 28410.

It is an arithmetic number, because the mean of its divisors is an integer number (1392520).

Almost surely, 2^18866064 is an apocalyptic number.

18866064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18866064 is an abundant number, since it is smaller than the sum of its proper divisors (36834736).

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

18866064 is a wasteful number, since it uses less digits than its factorization.

18866064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56167 (or 56161 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 18866064 is about 4343.5082594603. The cubic root of 18866064 is about 266.2116769105.

The spelling of 18866064 in words is "eighteen million, eight hundred sixty-six thousand, sixty-four".