16898149 has 4 divisors (see below), whose sum is σ = 17217036. Its totient is φ = 16579264.

The previous prime is 16898143. The next prime is 16898171. The reversal of 16898149 is 94189861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8661249 + 8236900 = 2943^2 + 2870^2 .

It is a cyclic number.

It is not a de Polignac number, because 16898149 - 2¹⁷ = 16767077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16898099 and 16898108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16898143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159364 + ... + 159469.

It is an arithmetic number, because the mean of its divisors is an integer number (4304259).

Almost surely, 2^16898149 is an apocalyptic number.

It is an amenable number.

16898149 is a deficient number, since it is larger than the sum of its proper divisors (318887).

16898149 is an equidigital number, since it uses as much as digits as its factorization.

16898149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318886.

The product of its digits is 124416, while the sum is 46.

The square root of 16898149 is about 4110.7358222099. The cubic root of 16898149 is about 256.6136250282.

The spelling of 16898149 in words is "sixteen million, eight hundred ninety-eight thousand, one hundred forty-nine".