188461406 has 16 divisors (see below), whose sum is σ = 327628800. Its totient is φ = 79631160.

The previous prime is 188461393. The next prime is 188461411. The reversal of 188461406 is 604164881.

It is a pancake number, because a pancake can be divided into 188461406 parts by 19414 straight cuts.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 188461406.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 93806 + ... + 95793.

It is an arithmetic number, because the mean of its divisors is an integer number (20476800).

Almost surely, 2^188461406 is an apocalyptic number.

188461406 is a deficient number, since it is larger than the sum of its proper divisors (139167394).

188461406 is a wasteful number, since it uses less digits than its factorization.

188461406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189679.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 188461406 is about 13728.1246352151. The cubic root of 188461406 is about 573.3337074843. Note that the first 3 decimals are identical.

The spelling of 188461406 in words is "one hundred eighty-eight million, four hundred sixty-one thousand, four hundred six".