193248746909 has 2 divisors, whose sum is σ = 193248746910. Its totient is φ = 193248746908.

The previous prime is 193248746891. The next prime is 193248746953. The reversal of 193248746909 is 909647842391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192718366009 + 530380900 = 438997^2 + 23030^2 .

It is a cyclic number.

It is not a de Polignac number, because 193248746909 - 2²⁰ = 193247698333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193248746989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96624373454 + 96624373455.

It is an arithmetic number, because the mean of its divisors is an integer number (96624373455).

Almost surely, 2^193248746909 is an apocalyptic number.

It is an amenable number.

193248746909 is a deficient number, since it is larger than the sum of its proper divisors (1).

193248746909 is an equidigital number, since it uses as much as digits as its factorization.

193248746909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 193248746909 in words is "one hundred ninety-three billion, two hundred forty-eight million, seven hundred forty-six thousand, nine hundred nine".