197081449 has 4 divisors (see below), whose sum is σ = 197125200. Its totient is φ = 197037700.

The previous prime is 197081447. The next prime is 197081453. The reversal of 197081449 is 944180791.

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 197081449 - 2¹ = 197081447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197081447) 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, 14227 + ... + 24424.

It is an arithmetic number, because the mean of its divisors is an integer number (49281300).

Almost surely, 2^197081449 is an apocalyptic number.

It is an amenable number.

197081449 is a deficient number, since it is larger than the sum of its proper divisors (43751).

197081449 is an equidigital number, since it uses as much as digits as its factorization.

197081449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43750.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 197081449 is about 14038.5700482635. The cubic root of 197081449 is about 581.9449657262.

The spelling of 197081449 in words is "one hundred ninety-seven million, eighty-one thousand, four hundred forty-nine".