188438241105 has 32 divisors (see below), whose sum is σ = 335076566400. Its totient is φ = 100477820736.

The previous prime is 188438241077. The next prime is 188438241133. The reversal of 188438241105 is 501142834881.

188438241105 is a `hidden beast` number, since 1 + 88 + 438 + 24 + 110 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (188438241077) and next prime (188438241133).

It is not a de Polignac number, because 188438241105 - 2⁶ = 188438241041 is a prime.

It is a super-2 number, since 2×188438241105² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 455286 + ... + 764304.

It is an arithmetic number, because the mean of its divisors is an integer number (10471142700).

Almost surely, 2^188438241105 is an apocalyptic number.

188438241105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

188438241105 is a deficient number, since it is larger than the sum of its proper divisors (146638325295).

188438241105 is a wasteful number, since it uses less digits than its factorization.

188438241105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313550 (or 313544 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 188438241105 in words is "one hundred eighty-eight billion, four hundred thirty-eight million, two hundred forty-one thousand, one hundred five".