193423895890 has 8 divisors (see below), whose sum is σ = 348163012620. Its totient is φ = 77369558352.

The previous prime is 193423895887. The next prime is 193423895897. The reversal of 193423895890 is 98598324391.

193423895890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 173763088801 + 19660807089 = 416849^2 + 140217^2 .

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

It is not an unprimeable number, because it can be changed into a prime (193423895897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9671194785 + ... + 9671194804.

Almost surely, 2^193423895890 is an apocalyptic number.

193423895890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193423895890 is a deficient number, since it is larger than the sum of its proper divisors (154739116730).

193423895890 is a wasteful number, since it uses less digits than its factorization.

193423895890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19342389596.

The product of its (nonzero) digits is 16796160, while the sum is 61.

The spelling of 193423895890 in words is "one hundred ninety-three billion, four hundred twenty-three million, eight hundred ninety-five thousand, eight hundred ninety".