189609984001 has 4 divisors (see below), whose sum is σ = 190314854100. Its totient is φ = 188905113904.

The previous prime is 189609983989. The next prime is 189609984029. The reversal of 189609984001 is 100489906981.

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 111523270401 + 78086713600 = 333951^2 + 279440^2 .

It is a cyclic number.

It is not a de Polignac number, because 189609984001 - 2³³ = 181020049409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189609984071) 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, 352434646 + ... + 352435183.

It is an arithmetic number, because the mean of its divisors is an integer number (47578713525).

Almost surely, 2^189609984001 is an apocalyptic number.

It is an amenable number.

189609984001 is a deficient number, since it is larger than the sum of its proper divisors (704870099).

189609984001 is an equidigital number, since it uses as much as digits as its factorization.

189609984001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704870098.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 189609984001 in words is "one hundred eighty-nine billion, six hundred nine million, nine hundred eighty-four thousand, one".