18196008 has 64 divisors (see below), whose sum is σ = 48299520. Its totient is φ = 5702400.

The previous prime is 18195937. The next prime is 18196019. The reversal of 18196008 is 80069181.

It is a self number, because there is not a number n which added to its sum of digits gives 18196008.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27198 + ... + 27858.

It is an arithmetic number, because the mean of its divisors is an integer number (754680).

Almost surely, 2^18196008 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 18196008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24149760).

18196008 is an abundant number, since it is smaller than the sum of its proper divisors (30103512).

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

18196008 is a wasteful number, since it uses less digits than its factorization.

18196008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 18196008 is about 4265.6779062653. The cubic root of 18196008 is about 263.0219781447.

The spelling of 18196008 in words is "eighteen million, one hundred ninety-six thousand, eight".