16990851 has 16 divisors (see below), whose sum is σ = 23442048. Its totient is φ = 10939200.

The previous prime is 16990843. The next prime is 16990873. The reversal of 16990851 is 15809961.

It is not a de Polignac number, because 16990851 - 2³ = 16990843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16990801) 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, 12516 + ... + 13806.

It is an arithmetic number, because the mean of its divisors is an integer number (1465128).

Almost surely, 2^16990851 is an apocalyptic number.

16990851 is a deficient number, since it is larger than the sum of its proper divisors (6451197).

16990851 is a wasteful number, since it uses less digits than its factorization.

16990851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 16990851 is about 4121.9959970868. The cubic root of 16990851 is about 257.0820240135.

The spelling of 16990851 in words is "sixteen million, nine hundred ninety thousand, eight hundred fifty-one".