18199016 has 16 divisors (see below), whose sum is σ = 37225440. Its totient is φ = 8272240.

The previous prime is 18198977. The next prime is 18199031. The reversal of 18199016 is 61099181.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103316 + ... + 103491.

It is an arithmetic number, because the mean of its divisors is an integer number (2326590).

Almost surely, 2^18199016 is an apocalyptic number.

It is an amenable number.

18199016 is an abundant number, since it is smaller than the sum of its proper divisors (19026424).

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

18199016 is a wasteful number, since it uses less digits than its factorization.

18199016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206824 (or 206820 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 18199016 is about 4266.0304734026. The cubic root of 18199016 is about 263.0364708202.

The spelling of 18199016 in words is "eighteen million, one hundred ninety-nine thousand, sixteen".