16634493 has 6 divisors (see below), whose sum is σ = 24027614. Its totient is φ = 11089656.

The previous prime is 16634491. The next prime is 16634531. The reversal of 16634493 is 39443661.

16634493 is a `hidden beast` number, since 16 + 634 + 4 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14884164 + 1750329 = 3858^2 + 1323^2 .

It is not a de Polignac number, because 16634493 - 2¹ = 16634491 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 (16634491) 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 5 ways as a sum of consecutive naturals, for example, 924130 + ... + 924147.

Almost surely, 2^16634493 is an apocalyptic number.

It is an amenable number.

16634493 is a deficient number, since it is larger than the sum of its proper divisors (7393121).

16634493 is a wasteful number, since it uses less digits than its factorization.

16634493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848283 (or 1848280 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 16634493 is about 4078.5405477940. The cubic root of 16634493 is about 255.2720050238.

The spelling of 16634493 in words is "sixteen million, six hundred thirty-four thousand, four hundred ninety-three".