194406071289 has 8 divisors (see below), whose sum is σ = 259861013760. Its totient is φ = 129277588176.

The previous prime is 194406071273. The next prime is 194406071303. The reversal of 194406071289 is 982170604491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 194406071289 - 2⁴ = 194406071273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194406071239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81613449 + ... + 81615830.

It is an arithmetic number, because the mean of its divisors is an integer number (32482626720).

Almost surely, 2^194406071289 is an apocalyptic number.

It is an amenable number.

194406071289 is a deficient number, since it is larger than the sum of its proper divisors (65454942471).

194406071289 is a wasteful number, since it uses less digits than its factorization.

194406071289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163229679.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 194406071289 in words is "one hundred ninety-four billion, four hundred six million, seventy-one thousand, two hundred eighty-nine".