18469668 has 72 divisors (see below), whose sum is σ = 50791104. Its totient is φ = 5208000.

The previous prime is 18469613. The next prime is 18469687. The reversal of 18469668 is 86696481.

It is a super-2 number, since 2×18469668² = 682257272060448, which contains 22 as substring.

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 in 23 ways as a sum of consecutive naturals, for example, 59233 + ... + 59543.

It is an arithmetic number, because the mean of its divisors is an integer number (705432).

Almost surely, 2^18469668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18469668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25395552).

18469668 is an abundant number, since it is smaller than the sum of its proper divisors (32321436).

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

18469668 is a wasteful number, since it uses less digits than its factorization.

18469668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 424 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 18469668 is about 4297.6351636685. The cubic root of 18469668 is about 264.3340010418.

The spelling of 18469668 in words is "eighteen million, four hundred sixty-nine thousand, six hundred sixty-eight".