166203426 has 8 divisors (see below), whose sum is σ = 332406864. Its totient is φ = 55401140.

The previous prime is 166203419. The next prime is 166203449. The reversal of 166203426 is 624302661.

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

166203426 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 166203393 and 166203402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13850280 + ... + 13850291.

It is an arithmetic number, because the mean of its divisors is an integer number (41550858).

Almost surely, 2^166203426 is an apocalyptic number.

166203426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166203426 is a wasteful number, since it uses less digits than its factorization.

166203426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27700576.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 166203426 is about 12891.9907694661. The cubic root of 166203426 is about 549.8108727137.

The spelling of 166203426 in words is "one hundred sixty-six million, two hundred three thousand, four hundred twenty-six".