188868685458 has 16 divisors (see below), whose sum is σ = 399957216480. Its totient is φ = 59252920896.

The previous prime is 188868685403. The next prime is 188868685463. The reversal of 188868685458 is 854586868881.

It is a self number, because there is not a number n which added to its sum of digits gives 188868685458.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925826788 + ... + 925826991.

It is an arithmetic number, because the mean of its divisors is an integer number (24997326030).

Almost surely, 2^188868685458 is an apocalyptic number.

188868685458 is an abundant number, since it is smaller than the sum of its proper divisors (211088531022).

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

188868685458 is a wasteful number, since it uses less digits than its factorization.

188868685458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851653801.

The product of its digits is 943718400, while the sum is 75.

The spelling of 188868685458 in words is "one hundred eighty-eight billion, eight hundred sixty-eight million, six hundred eighty-five thousand, four hundred fifty-eight".