18466899 has 12 divisors (see below), whose sum is σ = 27064968. Its totient is φ = 11191840.

The previous prime is 18466897. The next prime is 18466901. The reversal of 18466899 is 99866481.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18466897) and next prime (18466901).

It is not a de Polignac number, because 18466899 - 2¹ = 18466897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18466891) 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 11 ways as a sum of consecutive naturals, for example, 25074 + ... + 25799.

It is an arithmetic number, because the mean of its divisors is an integer number (2255414).

Almost surely, 2^18466899 is an apocalyptic number.

18466899 is a deficient number, since it is larger than the sum of its proper divisors (8598069).

18466899 is a wasteful number, since it uses less digits than its factorization.

18466899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50898 (or 50887 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 18466899 is about 4297.3129976766. The cubic root of 18466899 is about 264.3207905999.

The spelling of 18466899 in words is "eighteen million, four hundred sixty-six thousand, eight hundred ninety-nine".