16489801 has 4 divisors (see below), whose sum is σ = 16498372. Its totient is φ = 16481232.

The previous prime is 16489793. The next prime is 16489817. The reversal of 16489801 is 10898461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15397776 + 1092025 = 3924^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 16489801 - 2³ = 16489793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16489601) 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, 91 + ... + 5743.

It is an arithmetic number, because the mean of its divisors is an integer number (4124593).

Almost surely, 2^16489801 is an apocalyptic number.

It is an amenable number.

16489801 is a deficient number, since it is larger than the sum of its proper divisors (8571).

16489801 is an equidigital number, since it uses as much as digits as its factorization.

16489801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 16489801 is about 4060.7635981426. The cubic root of 16489801 is about 254.5297034587.

It can be divided in two parts, 1648 and 9801, that added together give a square (11449 = 107²).

The spelling of 16489801 in words is "sixteen million, four hundred eighty-nine thousand, eight hundred one".