188528426387 has 16 divisors (see below), whose sum is σ = 220489961472. Its totient is φ = 157824737280.

The previous prime is 188528426357. The next prime is 188528426417. The reversal of 188528426387 is 783624825881.

It is an interprime number because it is at equal distance from previous prime (188528426357) and next prime (188528426417).

It is not a de Polignac number, because 188528426387 - 2¹⁰ = 188528425363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188528426347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5840462 + ... + 5872652.

It is an arithmetic number, because the mean of its divisors is an integer number (13780622592).

Almost surely, 2^188528426387 is an apocalyptic number.

188528426387 is a deficient number, since it is larger than the sum of its proper divisors (31961535085).

188528426387 is a wasteful number, since it uses less digits than its factorization.

188528426387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51698.

The product of its digits is 41287680, while the sum is 62.

The spelling of 188528426387 in words is "one hundred eighty-eight billion, five hundred twenty-eight million, four hundred twenty-six thousand, three hundred eighty-seven".