197428574093 has 4 divisors (see below), whose sum is σ = 197431298400. Its totient is φ = 197425849788.

The previous prime is 197428574071. The next prime is 197428574131. The reversal of 197428574093 is 390475824791.

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 not a de Polignac number, because 197428574093 - 2¹² = 197428569997 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 (197428574023) 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, 1250393 + ... + 1399406.

It is an arithmetic number, because the mean of its divisors is an integer number (49357824600).

Almost surely, 2^197428574093 is an apocalyptic number.

It is an amenable number.

197428574093 is a deficient number, since it is larger than the sum of its proper divisors (2724307).

197428574093 is an equidigital number, since it uses as much as digits as its factorization.

197428574093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724306.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 197428574093 in words is "one hundred ninety-seven billion, four hundred twenty-eight million, five hundred seventy-four thousand, ninety-three".