197313072793 has 4 divisors (see below), whose sum is σ = 199123284580. Its totient is φ = 195502861008.

The previous prime is 197313072739. The next prime is 197313072799. The reversal of 197313072793 is 397270313791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68182087689 + 129130985104 = 261117^2 + 359348^2 .

It is a cyclic number.

It is not a de Polignac number, because 197313072793 - 2¹³ = 197313064601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197313072793.

It is not an unprimeable number, because it can be changed into a prime (197313072799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905105730 + ... + 905105947.

It is an arithmetic number, because the mean of its divisors is an integer number (49780821145).

Almost surely, 2^197313072793 is an apocalyptic number.

It is an amenable number.

197313072793 is a deficient number, since it is larger than the sum of its proper divisors (1810211787).

197313072793 is a wasteful number, since it uses less digits than its factorization.

197313072793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810211786.

The product of its (nonzero) digits is 1500282, while the sum is 52.

The spelling of 197313072793 in words is "one hundred ninety-seven billion, three hundred thirteen million, seventy-two thousand, seven hundred ninety-three".