189004461889 has 4 divisors (see below), whose sum is σ = 189008039556. Its totient is φ = 189000884224.

The previous prime is 189004461887. The next prime is 189004461907. The reversal of 189004461889 is 988164400981.

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 86727305025 + 102277156864 = 294495^2 + 319808^2 .

It is a cyclic number.

It is not a de Polignac number, because 189004461889 - 2¹ = 189004461887 is a prime.

It is a super-2 number, since 2×189004461889² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189004461881) 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, 1708384 + ... + 1815649.

It is an arithmetic number, because the mean of its divisors is an integer number (47252009889).

Almost surely, 2^189004461889 is an apocalyptic number.

It is an amenable number.

189004461889 is a deficient number, since it is larger than the sum of its proper divisors (3577667).

189004461889 is an equidigital number, since it uses as much as digits as its factorization.

189004461889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577666.

The product of its (nonzero) digits is 3981312, while the sum is 58.

The spelling of 189004461889 in words is "one hundred eighty-nine billion, four million, four hundred sixty-one thousand, eight hundred eighty-nine".