197281474093 has 4 divisors (see below), whose sum is σ = 215216153568. Its totient is φ = 179346794620.

The previous prime is 197281474087. The next prime is 197281474097. The reversal of 197281474093 is 390474182791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197281474093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197281474097) 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, 8967339721 + ... + 8967339742.

It is an arithmetic number, because the mean of its divisors is an integer number (53804038392).

Almost surely, 2^197281474093 is an apocalyptic number.

It is an amenable number.

197281474093 is a deficient number, since it is larger than the sum of its proper divisors (17934679475).

197281474093 is a wasteful number, since it uses less digits than its factorization.

197281474093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17934679474.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 197281474093 in words is "one hundred ninety-seven billion, two hundred eighty-one million, four hundred seventy-four thousand, ninety-three".