16990123 has 16 divisors (see below), whose sum is σ = 19768320. Its totient is φ = 14484096.

The previous prime is 16990111. The next prime is 16990151. The reversal of 16990123 is 32109961.

It is a cyclic number.

It is not a de Polignac number, because 16990123 - 2⁵ = 16990091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16990153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6286 + ... + 8572.

It is an arithmetic number, because the mean of its divisors is an integer number (1235520).

Almost surely, 2^16990123 is an apocalyptic number.

16990123 is a deficient number, since it is larger than the sum of its proper divisors (2778197).

16990123 is a wasteful number, since it uses less digits than its factorization.

16990123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 16990123 is about 4121.9076894079. The cubic root of 16990123 is about 257.0783522652.

The spelling of 16990123 in words is "sixteen million, nine hundred ninety thousand, one hundred twenty-three".