188539412 has 6 divisors (see below), whose sum is σ = 329943978. Its totient is φ = 94269704.

The previous prime is 188539409. The next prime is 188539423. The reversal of 188539412 is 214935881.

It can be written as a sum of positive squares in only one way, i.e., 181548676 + 6990736 = 13474^2 + 2644^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 188539412.

It is a congruent 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 as a sum of consecutive naturals, namely, 23567423 + ... + 23567430.

It is an arithmetic number, because the mean of its divisors is an integer number (54990663).

Almost surely, 2^188539412 is an apocalyptic number.

It is an amenable number.

188539412 is a deficient number, since it is larger than the sum of its proper divisors (141404566).

188539412 is a wasteful number, since it uses less digits than its factorization.

188539412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47134857 (or 47134855 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 188539412 is about 13730.9654431143. The cubic root of 188539412 is about 573.4127993632.

The spelling of 188539412 in words is "one hundred eighty-eight million, five hundred thirty-nine thousand, four hundred twelve".