188990984353 has 4 divisors (see below), whose sum is σ = 193386123568. Its totient is φ = 184595845140.

The previous prime is 188990984321. The next prime is 188990984363. The reversal of 188990984353 is 353489099881.

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: 353489099881 = 87491 ⋅4040291.

It is a cyclic number.

It is not a de Polignac number, because 188990984353 - 2⁵ = 188990984321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188990984363) 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, 2197569543 + ... + 2197569628.

It is an arithmetic number, because the mean of its divisors is an integer number (48346530892).

Almost surely, 2^188990984353 is an apocalyptic number.

It is an amenable number.

188990984353 is a deficient number, since it is larger than the sum of its proper divisors (4395139215).

188990984353 is an equidigital number, since it uses as much as digits as its factorization.

188990984353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395139214.

The product of its (nonzero) digits is 67184640, while the sum is 67.

The spelling of 188990984353 in words is "one hundred eighty-eight billion, nine hundred ninety million, nine hundred eighty-four thousand, three hundred fifty-three".