16091855 has 16 divisors (see below), whose sum is σ = 21360864. Its totient is φ = 11560320.

The previous prime is 16091827. The next prime is 16091857. The reversal of 16091855 is 55819061.

It is not a de Polignac number, because 16091855 - 2⁸ = 16091599 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 (16091857) 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, 941 + ... + 5750.

It is an arithmetic number, because the mean of its divisors is an integer number (1335054).

Almost surely, 2^16091855 is an apocalyptic number.

16091855 is a deficient number, since it is larger than the sum of its proper divisors (5269009).

16091855 is a wasteful number, since it uses less digits than its factorization.

16091855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6746.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 16091855 is about 4011.4654429522. The cubic root of 16091855 is about 252.4654986680.

The spelling of 16091855 in words is "sixteen million, ninety-one thousand, eight hundred fifty-five".