18488966 has 4 divisors (see below), whose sum is σ = 27733452. Its totient is φ = 9244482.

The previous prime is 18488933. The next prime is 18488971. The reversal of 18488966 is 66988481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66988481 = 7 ⋅9569783.

It is a super-3 number, since 3×18488966³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4622240 + ... + 4622243.

It is an arithmetic number, because the mean of its divisors is an integer number (6933363).

Almost surely, 2^18488966 is an apocalyptic number.

18488966 is a deficient number, since it is larger than the sum of its proper divisors (9244486).

18488966 is an equidigital number, since it uses as much as digits as its factorization.

18488966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244485.

The product of its digits is 663552, while the sum is 50.

The square root of 18488966 is about 4299.8797657609. The cubic root of 18488966 is about 264.4260319679.

The spelling of 18488966 in words is "eighteen million, four hundred eighty-eight thousand, nine hundred sixty-six".