16674843438 has 32 divisors (see below), whose sum is σ = 40423864320. Its totient is φ = 5052982680.

The previous prime is 16674843421. The next prime is 16674843461. The reversal of 16674843438 is 83434847661.

16674843438 is a `hidden beast` number, since 1 + 66 + 74 + 84 + 3 + 438 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14035470 + ... + 14036657.

It is an arithmetic number, because the mean of its divisors is an integer number (1263245760).

Almost surely, 2^16674843438 is an apocalyptic number.

16674843438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16674843438 is an abundant number, since it is smaller than the sum of its proper divisors (23749020882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16674843438 is a wasteful number, since it uses less digits than its factorization.

16674843438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28072149 (or 28072143 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The spelling of 16674843438 in words is "sixteen billion, six hundred seventy-four million, eight hundred forty-three thousand, four hundred thirty-eight".