197411609 has 4 divisors (see below), whose sum is σ = 201611904. Its totient is φ = 193211316.

The previous prime is 197411603. The next prime is 197411611. The reversal of 197411609 is 906114791.

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: 906114791 = 43 ⋅21072437.

It is a cyclic number.

It is not a de Polignac number, because 197411609 - 2²⁴ = 180634393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197411603) 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, 2100077 + ... + 2100170.

It is an arithmetic number, because the mean of its divisors is an integer number (50402976).

Almost surely, 2^197411609 is an apocalyptic number.

It is an amenable number.

197411609 is a deficient number, since it is larger than the sum of its proper divisors (4200295).

197411609 is an equidigital number, since it uses as much as digits as its factorization.

197411609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200294.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 197411609 is about 14050.3241599616. The cubic root of 197411609 is about 582.2697515097.

The spelling of 197411609 in words is "one hundred ninety-seven million, four hundred eleven thousand, six hundred nine".