188480138 has 16 divisors (see below), whose sum is σ = 352482624. Its totient is φ = 73433760.

The previous prime is 188480129. The next prime is 188480141. The reversal of 188480138 is 831084881.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 188480095 and 188480104.

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, 611795 + ... + 612102.

It is an arithmetic number, because the mean of its divisors is an integer number (22030164).

Almost surely, 2^188480138 is an apocalyptic number.

188480138 is a deficient number, since it is larger than the sum of its proper divisors (164002486).

188480138 is a wasteful number, since it uses less digits than its factorization.

188480138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223917.

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 188480138 is about 13728.8068673137. The cubic root of 188480138 is about 573.3527022331.

The spelling of 188480138 in words is "one hundred eighty-eight million, four hundred eighty thousand, one hundred thirty-eight".