16198631 has 4 divisors (see below), whose sum is σ = 16209600. Its totient is φ = 16187664.

The previous prime is 16198613. The next prime is 16198667. The reversal of 16198631 is 13689161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13689161 = 191 ⋅71671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16198631 is a prime.

It is a super-2 number, since 2×16198631² = 524791292548322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16198591 and 16198600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16198531) 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 3 ways as a sum of consecutive naturals, for example, 2846 + ... + 6363.

It is an arithmetic number, because the mean of its divisors is an integer number (4052400).

Almost surely, 2^16198631 is an apocalyptic number.

16198631 is a deficient number, since it is larger than the sum of its proper divisors (10969).

16198631 is an equidigital number, since it uses as much as digits as its factorization.

16198631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10968.

The product of its digits is 7776, while the sum is 35.

The square root of 16198631 is about 4024.7522905143. The cubic root of 16198631 is about 253.0226718631.

The spelling of 16198631 in words is "sixteen million, one hundred ninety-eight thousand, six hundred thirty-one".