16485191 has 4 divisors (see below), whose sum is σ = 16499112. Its totient is φ = 16471272.

The previous prime is 16485163. The next prime is 16485193. The reversal of 16485191 is 19158461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16485191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16485193) 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, 5000 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (4124778).

Almost surely, 2^16485191 is an apocalyptic number.

16485191 is a deficient number, since it is larger than the sum of its proper divisors (13921).

16485191 is a wasteful number, since it uses less digits than its factorization.

16485191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13920.

The product of its digits is 8640, while the sum is 35.

The square root of 16485191 is about 4060.1959312329. The cubic root of 16485191 is about 254.5059819010.

The spelling of 16485191 in words is "sixteen million, four hundred eighty-five thousand, one hundred ninety-one".