194893112089 has 27 divisors (see below), whose sum is σ = 218753025309. Its totient is φ = 173549507040.

The previous prime is 194893112083. The next prime is 194893112129. The reversal of 194893112089 is 980211398491.

The square root of 194893112089 is 441467.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 24990867225 + 169902244864 = 158085^2 + 412192^2 .

It is not a de Polignac number, because 194893112089 - 2³⁷ = 57454158617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194893112083) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 166432474 + ... + 166433644.

Almost surely, 2^194893112089 is an apocalyptic number.

194893112089 is the 441467-th square number.

194893112089 is the 220734-th centered octagonal number.

It is an amenable number.

194893112089 is a deficient number, since it is larger than the sum of its proper divisors (23859913220).

194893112089 is an frugal number, since it uses more digits than its factorization.

194893112089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 1213 counting only the distinct ones).

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

The spelling of 194893112089 in words is "one hundred ninety-four billion, eight hundred ninety-three million, one hundred twelve thousand, eighty-nine".