193149830 has 24 divisors (see below), whose sum is σ = 350284176. Its totient is φ = 76682160.

The previous prime is 193149793. The next prime is 193149833. The reversal of 193149830 is 38941391.

It is a happy number.

193149830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193149833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712595 + ... + 712865.

It is an arithmetic number, because the mean of its divisors is an integer number (14595174).

Almost surely, 2^193149830 is an apocalyptic number.

193149830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193149830 is a deficient number, since it is larger than the sum of its proper divisors (157134346).

193149830 is an equidigital number, since it uses as much as digits as its factorization.

193149830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 193149830 is about 13897.8354429746. The cubic root of 193149830 is about 578.0491630935.

The spelling of 193149830 in words is "one hundred ninety-three million, one hundred forty-nine thousand, eight hundred thirty".