193440894355 has 16 divisors (see below), whose sum is σ = 237565470240. Its totient is φ = 151170350848.

The previous prime is 193440894349. The next prime is 193440894359. The reversal of 193440894355 is 553498044391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193440894355 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 193440894296 and 193440894305.

It is not an unprimeable number, because it can be changed into a prime (193440894359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2581732 + ... + 2655601.

It is an arithmetic number, because the mean of its divisors is an integer number (14847841890).

Almost surely, 2^193440894355 is an apocalyptic number.

193440894355 is a deficient number, since it is larger than the sum of its proper divisors (44124575885).

193440894355 is an equidigital number, since it uses as much as digits as its factorization.

193440894355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237510.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 193440894355 in words is "one hundred ninety-three billion, four hundred forty million, eight hundred ninety-four thousand, three hundred fifty-five".