193139149 has 8 divisors (see below), whose sum is σ = 226696448. Its totient is φ = 161073360.

The previous prime is 193139147. The next prime is 193139179. The reversal of 193139149 is 941931391.

It is a happy number.

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

It is not a de Polignac number, because 193139149 - 2¹ = 193139147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193139143) 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, 372597 + ... + 373114.

It is an arithmetic number, because the mean of its divisors is an integer number (28337056).

Almost surely, 2^193139149 is an apocalyptic number.

It is an amenable number.

193139149 is a deficient number, since it is larger than the sum of its proper divisors (33557299).

193139149 is an equidigital number, since it uses as much as digits as its factorization.

193139149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745755.

The product of its digits is 26244, while the sum is 40.

The square root of 193139149 is about 13897.4511691893. The cubic root of 193139149 is about 578.0385077093.

The spelling of 193139149 in words is "one hundred ninety-three million, one hundred thirty-nine thousand, one hundred forty-nine".