193720741 has 2 divisors, whose sum is σ = 193720742. Its totient is φ = 193720740.

The previous prime is 193720717. The next prime is 193720817. The reversal of 193720741 is 147027391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176331841 + 17388900 = 13279^2 + 4170^2 .

It is a cyclic number.

It is not a de Polignac number, because 193720741 - 2²¹ = 191623589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 193720697 and 193720706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193720441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96860370 + 96860371.

It is an arithmetic number, because the mean of its divisors is an integer number (96860371).

Almost surely, 2^193720741 is an apocalyptic number.

It is an amenable number.

193720741 is a deficient number, since it is larger than the sum of its proper divisors (1).

193720741 is an equidigital number, since it uses as much as digits as its factorization.

193720741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 193720741 is about 13918.3598530861. The cubic root of 193720741 is about 578.6181341818.

The spelling of 193720741 in words is "one hundred ninety-three million, seven hundred twenty thousand, seven hundred forty-one".