188987542 has 4 divisors (see below), whose sum is σ = 283481316. Its totient is φ = 94493770.

The previous prime is 188987531. The next prime is 188987549. The reversal of 188987542 is 245789881.

It is a happy number.

188987542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245789881 = 349 ⋅704269.

It is a self number, because there is not a number n which added to its sum of digits gives 188987542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188987549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47246884 + ... + 47246887.

It is an arithmetic number, because the mean of its divisors is an integer number (70870329).

Almost surely, 2^188987542 is an apocalyptic number.

188987542 is a deficient number, since it is larger than the sum of its proper divisors (94493774).

188987542 is an equidigital number, since it uses as much as digits as its factorization.

188987542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94493773.

The product of its digits is 1290240, while the sum is 52.

The square root of 188987542 is about 13747.2739843214. The cubic root of 188987542 is about 573.8667454030.

The spelling of 188987542 in words is "one hundred eighty-eight million, nine hundred eighty-seven thousand, five hundred forty-two".