163874426 has 8 divisors (see below), whose sum is σ = 249841524. Its totient is φ = 80593920.

The previous prime is 163874393. The next prime is 163874483. The reversal of 163874426 is 624478361.

It can be written as a sum of positive squares in 2 ways, for example, as 163814401 + 60025 = 12799^2 + 245^2 .

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

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 671495 + ... + 671738.

Almost surely, 2^163874426 is an apocalyptic number.

163874426 is a deficient number, since it is larger than the sum of its proper divisors (85967098).

163874426 is a wasteful number, since it uses less digits than its factorization.

163874426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343296.

The product of its digits is 193536, while the sum is 41.

The square root of 163874426 is about 12801.3446949920. The cubic root of 163874426 is about 547.2306255338.

The spelling of 163874426 in words is "one hundred sixty-three million, eight hundred seventy-four thousand, four hundred twenty-six".