193855 has 8 divisors (see below), whose sum is σ = 235152. Its totient is φ = 153408.

The previous prime is 193847. The next prime is 193859. The reversal of 193855 is 558391.

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

It is a cyclic number.

It is not a de Polignac number, because 193855 - 2³ = 193847 is a prime.

It is a super-2 number, since 2×193855² = 75159522050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 826.

It is an arithmetic number, because the mean of its divisors is an integer number (29394).

2¹⁹³⁸⁵⁵ is an apocalyptic number.

193855 is a deficient number, since it is larger than the sum of its proper divisors (41297).

193855 is a wasteful number, since it uses less digits than its factorization.

193855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its digits is 5400, while the sum is 31.

The square root of 193855 is about 440.2896773716. The cubic root of 193855 is about 57.8751774583.

The spelling of 193855 in words is "one hundred ninety-three thousand, eight hundred fifty-five".