188228812643 has 8 divisors (see below), whose sum is σ = 193180163328. Its totient is φ = 183329308864.

The previous prime is 188228812633. The next prime is 188228812679. The reversal of 188228812643 is 346218822881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 188228812643 - 2³⁴ = 171048943459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188228812613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12954371 + ... + 12968892.

It is an arithmetic number, because the mean of its divisors is an integer number (24147520416).

Almost surely, 2^188228812643 is an apocalyptic number.

188228812643 is a deficient number, since it is larger than the sum of its proper divisors (4951350685).

188228812643 is a wasteful number, since it uses less digits than its factorization.

188228812643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25923453.

The product of its digits is 2359296, while the sum is 53.

The spelling of 188228812643 in words is "one hundred eighty-eight billion, two hundred twenty-eight million, eight hundred twelve thousand, six hundred forty-three".