197500905493 has 4 divisors (see below), whose sum is σ = 206087901408. Its totient is φ = 188913909580.

The previous prime is 197500905461. The next prime is 197500905499. The reversal of 197500905493 is 394509005791.

It is a happy number.

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 197500905493 - 2⁵ = 197500905461 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 197500905493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197500905499) 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, 4293497923 + ... + 4293497968.

It is an arithmetic number, because the mean of its divisors is an integer number (51521975352).

Almost surely, 2^197500905493 is an apocalyptic number.

It is an amenable number.

197500905493 is a deficient number, since it is larger than the sum of its proper divisors (8586995915).

197500905493 is an equidigital number, since it uses as much as digits as its factorization.

197500905493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586995914.

The product of its (nonzero) digits is 1530900, while the sum is 52.

The spelling of 197500905493 in words is "one hundred ninety-seven billion, five hundred million, nine hundred five thousand, four hundred ninety-three".