193149745 has 16 divisors (see below), whose sum is σ = 242237952. Its totient is φ = 147568960.

The previous prime is 193149739. The next prime is 193149757. The reversal of 193149745 is 547941391.

193149745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 193149745 - 2¹⁹ = 192625457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121224 + ... + 122806.

It is an arithmetic number, because the mean of its divisors is an integer number (15139872).

Almost surely, 2^193149745 is an apocalyptic number.

It is an amenable number.

193149745 is a deficient number, since it is larger than the sum of its proper divisors (49088207).

193149745 is a wasteful number, since it uses less digits than its factorization.

193149745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672.

The product of its digits is 136080, while the sum is 43.

The square root of 193149745 is about 13897.8323849441. The cubic root of 193149745 is about 578.0490782989.

The spelling of 193149745 in words is "one hundred ninety-three million, one hundred forty-nine thousand, seven hundred forty-five".