188103074421 has 4 divisors (see below), whose sum is σ = 250804099232. Its totient is φ = 125402049612.

The previous prime is 188103074413. The next prime is 188103074437. The reversal of 188103074421 is 124470301881.

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.

It is not a de Polignac number, because 188103074421 - 2³ = 188103074413 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 188103074421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188103274421) 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, 31350512401 + ... + 31350512406.

It is an arithmetic number, because the mean of its divisors is an integer number (62701024808).

Almost surely, 2^188103074421 is an apocalyptic number.

It is an amenable number.

188103074421 is a deficient number, since it is larger than the sum of its proper divisors (62701024811).

188103074421 is an equidigital number, since it uses as much as digits as its factorization.

188103074421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62701024810.

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 188103074421 in words is "one hundred eighty-eight billion, one hundred three million, seventy-four thousand, four hundred twenty-one".