188445134653 has 4 divisors (see below), whose sum is σ = 188497037248. Its totient is φ = 188393232060.

The previous prime is 188445134651. The next prime is 188445134671. The reversal of 188445134653 is 356431544881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356431544881 = 1091 ⋅326701691.

It is a cyclic number.

It is not a de Polignac number, because 188445134653 - 2¹ = 188445134651 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 188445134653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188445134651) 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, 25945851 + ... + 25953112.

It is an arithmetic number, because the mean of its divisors is an integer number (47124259312).

Almost surely, 2^188445134653 is an apocalyptic number.

It is an amenable number.

188445134653 is a deficient number, since it is larger than the sum of its proper divisors (51902595).

188445134653 is an equidigital number, since it uses as much as digits as its factorization.

188445134653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51902594.

The product of its digits is 5529600, while the sum is 52.

The spelling of 188445134653 in words is "one hundred eighty-eight billion, four hundred forty-five million, one hundred thirty-four thousand, six hundred fifty-three".