16353891 has 6 divisors (see below), whose sum is σ = 23622300. Its totient is φ = 10902588.

The previous prime is 16353877. The next prime is 16353899. The reversal of 16353891 is 19835361.

It is a happy number.

It is not a de Polignac number, because 16353891 - 2⁵ = 16353859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16353899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 908541 + ... + 908558.

It is an arithmetic number, because the mean of its divisors is an integer number (3937050).

Almost surely, 2^16353891 is an apocalyptic number.

16353891 is a deficient number, since it is larger than the sum of its proper divisors (7268409).

16353891 is a wasteful number, since it uses less digits than its factorization.

16353891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817105 (or 1817102 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 16353891 is about 4043.9944361980. The cubic root of 16353891 is about 253.8284900402.

The spelling of 16353891 in words is "sixteen million, three hundred fifty-three thousand, eight hundred ninety-one".