188488426427 has 4 divisors (see below), whose sum is σ = 215415344496. Its totient is φ = 161561508360.

The previous prime is 188488426387. The next prime is 188488426439. The reversal of 188488426427 is 724624884881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724624884881 = 22109 ⋅32775109.

It is not a de Polignac number, because 188488426427 - 2⁶ = 188488426363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 188488426427.

It is not an unprimeable number, because it can be changed into a prime (188488426127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13463459024 + ... + 13463459037.

It is an arithmetic number, because the mean of its divisors is an integer number (53853836124).

Almost surely, 2^188488426427 is an apocalyptic number.

188488426427 is a deficient number, since it is larger than the sum of its proper divisors (26926918069).

188488426427 is an equidigital number, since it uses as much as digits as its factorization.

188488426427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26926918068.

The product of its digits is 44040192, while the sum is 62.

The spelling of 188488426427 in words is "one hundred eighty-eight billion, four hundred eighty-eight million, four hundred twenty-six thousand, four hundred twenty-seven".