16631953 has 8 divisors (see below), whose sum is σ = 17943296. Its totient is φ = 15325200.

The previous prime is 16631947. The next prime is 16631959. The reversal of 16631953 is 35913661.

It is an interprime number because it is at equal distance from previous prime (16631947) and next prime (16631959).

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-16631953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16631959) 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, 12238 + ... + 13528.

It is an arithmetic number, because the mean of its divisors is an integer number (2242912).

Almost surely, 2^16631953 is an apocalyptic number.

16631953 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16631953 is a deficient number, since it is larger than the sum of its proper divisors (1311343).

16631953 is a wasteful number, since it uses less digits than its factorization.

16631953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295.

The product of its digits is 14580, while the sum is 34.

The square root of 16631953 is about 4078.2291500111. The cubic root of 16631953 is about 255.2590114629.

The spelling of 16631953 in words is "sixteen million, six hundred thirty-one thousand, nine hundred fifty-three".