16330491 has 10 divisors (see below), whose sum is σ = 24395052. Its totient is φ = 10886940.

The previous prime is 16330487. The next prime is 16330541. The reversal of 16330491 is 19403361.

It is not a de Polignac number, because 16330491 - 2² = 16330487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (16330441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 100725 + ... + 100886.

Almost surely, 2^16330491 is an apocalyptic number.

16330491 is a deficient number, since it is larger than the sum of its proper divisors (8064561).

16330491 is an equidigital number, since it uses as much as digits as its factorization.

16330491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201623 (or 201614 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 16330491 is about 4041.1002214743. The cubic root of 16330491 is about 253.7073685732.

The spelling of 16330491 in words is "sixteen million, three hundred thirty thousand, four hundred ninety-one".