16490018 has 8 divisors (see below), whose sum is σ = 24924240. Its totient is φ = 8181940.

The previous prime is 16489999. The next prime is 16490021. The reversal of 16490018 is 81009461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 31208 + ... + 31731.

It is an arithmetic number, because the mean of its divisors is an integer number (3115530).

Almost surely, 2^16490018 is an apocalyptic number.

16490018 is a deficient number, since it is larger than the sum of its proper divisors (8434222).

16490018 is a wasteful number, since it uses less digits than its factorization.

16490018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63072.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16490018 is about 4060.7903171673. The cubic root of 16490018 is about 254.5308199610.

Adding to 16490018 its reverse (81009461), we get a palindrome (97499479).

The spelling of 16490018 in words is "sixteen million, four hundred ninety thousand, eighteen".