193138 has 8 divisors (see below), whose sum is σ = 316080. Its totient is φ = 87780.

The previous prime is 193133. The next prime is 193139. The reversal of 193138 is 831391.

193138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (193133) by changing a digit.

193138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4368 + ... + 4411.

It is an arithmetic number, because the mean of its divisors is an integer number (39510).

2¹⁹³¹³⁸ is an apocalyptic number.

193138 is a deficient number, since it is larger than the sum of its proper divisors (122942).

193138 is a wasteful number, since it uses less digits than its factorization.

193138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8792.

The product of its digits is 648, while the sum is 25.

The square root of 193138 is about 439.4746864155. The cubic root of 193138 is about 57.8037361442.

It can be divided in two parts, 19313 and 8, that added together give a square (19321 = 139²).

The spelling of 193138 in words is "one hundred ninety-three thousand, one hundred thirty-eight".