192528221638 has 4 divisors (see below), whose sum is σ = 288792332460. Its totient is φ = 96264110818.

The previous prime is 192528221581. The next prime is 192528221647. The reversal of 192528221638 is 836122825291.

192528221638 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.

It is a super-4 number, since 4×192528221638⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 192528221591 and 192528221600.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 48132055408 + ... + 48132055411.

It is an arithmetic number, because the mean of its divisors is an integer number (72198083115).

Almost surely, 2^192528221638 is an apocalyptic number.

192528221638 is a deficient number, since it is larger than the sum of its proper divisors (96264110822).

192528221638 is an equidigital number, since it uses as much as digits as its factorization.

192528221638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96264110821.

The product of its digits is 829440, while the sum is 49.

The spelling of 192528221638 in words is "one hundred ninety-two billion, five hundred twenty-eight million, two hundred twenty-one thousand, six hundred thirty-eight".