197318093 has 4 divisors (see below), whose sum is σ = 225506400. Its totient is φ = 169129788.

The previous prime is 197318087. The next prime is 197318101. The reversal of 197318093 is 390813791.

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, and also an emirpimes, since its reverse is a distinct semiprime: 390813791 = 1451 ⋅269341.

It is a cyclic number.

It is not a de Polignac number, because 197318093 - 2⁶ = 197318029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197318093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197318083) 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, 14094143 + ... + 14094156.

It is an arithmetic number, because the mean of its divisors is an integer number (56376600).

Almost surely, 2^197318093 is an apocalyptic number.

It is an amenable number.

197318093 is a deficient number, since it is larger than the sum of its proper divisors (28188307).

197318093 is an equidigital number, since it uses as much as digits as its factorization.

197318093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28188306.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 197318093 is about 14046.9958710039. The cubic root of 197318093 is about 582.1777945090.

The spelling of 197318093 in words is "one hundred ninety-seven million, three hundred eighteen thousand, ninety-three".