16291493 has 8 divisors (see below), whose sum is σ = 17440800. Its totient is φ = 15171408.

The previous prime is 16291481. The next prime is 16291571. The reversal of 16291493 is 39419261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16291493 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 (16291403) 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 7 ways as a sum of consecutive naturals, for example, 6146 + ... + 8387.

It is an arithmetic number, because the mean of its divisors is an integer number (2180100).

Almost surely, 2^16291493 is an apocalyptic number.

It is an amenable number.

16291493 is a deficient number, since it is larger than the sum of its proper divisors (1149307).

16291493 is a wasteful number, since it uses less digits than its factorization.

16291493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14611.

The product of its digits is 11664, while the sum is 35.

The square root of 16291493 is about 4036.2721662445. The cubic root of 16291493 is about 253.5052524565.

The spelling of 16291493 in words is "sixteen million, two hundred ninety-one thousand, four hundred ninety-three".