16431643189 has 8 divisors (see below), whose sum is σ = 17699818752. Its totient is φ = 15164068080.

The previous prime is 16431643183. The next prime is 16431643211. The reversal of 16431643189 is 98134613461.

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

It is a cyclic number.

It is not a de Polignac number, because 16431643189 - 2³ = 16431643181 is a prime.

It is a super-2 number, since 2×16431643189² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16431643181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92449 + ... + 203494.

It is an arithmetic number, because the mean of its divisors is an integer number (2212477344).

Almost surely, 2^16431643189 is an apocalyptic number.

It is an amenable number.

16431643189 is a deficient number, since it is larger than the sum of its proper divisors (1268175563).

16431643189 is a wasteful number, since it uses less digits than its factorization.

16431643189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300227.

The product of its digits is 373248, while the sum is 46.

The spelling of 16431643189 in words is "sixteen billion, four hundred thirty-one million, six hundred forty-three thousand, one hundred eighty-nine".