188548642 has 4 divisors (see below), whose sum is σ = 282822966. Its totient is φ = 94274320.

The previous prime is 188548597. The next prime is 188548663. The reversal of 188548642 is 246845881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246845881 = 4561 ⋅54121.

It can be written as a sum of positive squares in only one way, i.e., 188540361 + 8281 = 13731^2 + 91^2 .

It is a junction number, because it is equal to n+sod(n) for n = 188548592 and 188548601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47137159 + ... + 47137162.

Almost surely, 2^188548642 is an apocalyptic number.

188548642 is a deficient number, since it is larger than the sum of its proper divisors (94274324).

188548642 is an equidigital number, since it uses as much as digits as its factorization.

188548642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94274323.

The product of its digits is 491520, while the sum is 46.

The square root of 188548642 is about 13731.3015406406. The cubic root of 188548642 is about 573.4221564055.

The spelling of 188548642 in words is "one hundred eighty-eight million, five hundred forty-eight thousand, six hundred forty-two".