188315122445 has 4 divisors (see below), whose sum is σ = 225978146940. Its totient is φ = 150652097952.

The previous prime is 188315122381. The next prime is 188315122469. The reversal of 188315122445 is 544221513881.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75593103364 + 112722019081 = 274942^2 + 335741^2 .

It is a cyclic number.

It is not a de Polignac number, because 188315122445 - 2⁶ = 188315122381 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 188315122396 and 188315122405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18831512240 + ... + 18831512249.

It is an arithmetic number, because the mean of its divisors is an integer number (56494536735).

Almost surely, 2^188315122445 is an apocalyptic number.

It is an amenable number.

188315122445 is a deficient number, since it is larger than the sum of its proper divisors (37663024495).

188315122445 is an equidigital number, since it uses as much as digits as its factorization.

188315122445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37663024494.

The product of its digits is 307200, while the sum is 44.

The spelling of 188315122445 in words is "one hundred eighty-eight billion, three hundred fifteen million, one hundred twenty-two thousand, four hundred forty-five".