188471742 has 8 divisors (see below), whose sum is σ = 376943496. Its totient is φ = 62823912.

The previous prime is 188471719. The next prime is 188471743. The reversal of 188471742 is 247174881.

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

188471742 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 188471694 and 188471703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188471743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15705973 + ... + 15705984.

It is an arithmetic number, because the mean of its divisors is an integer number (47117937).

Almost surely, 2^188471742 is an apocalyptic number.

188471742 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.

188471742 is a wasteful number, since it uses less digits than its factorization.

188471742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31411962.

The product of its digits is 100352, while the sum is 42.

The square root of 188471742 is about 13728.5010835124. The cubic root of 188471742 is about 573.3441886203.

The spelling of 188471742 in words is "one hundred eighty-eight million, four hundred seventy-one thousand, seven hundred forty-two".