197864492 has 24 divisors (see below), whose sum is σ = 412935936. Its totient is φ = 81111888.

The previous prime is 197864489. The next prime is 197864497. The reversal of 197864492 is 294468791.

197864492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 197864492.

It is not an unprimeable number, because it can be changed into a prime (197864497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152978 + ... + 154265.

It is an arithmetic number, because the mean of its divisors is an integer number (17205664).

Almost surely, 2^197864492 is an apocalyptic number.

It is an amenable number.

197864492 is an abundant number, since it is smaller than the sum of its proper divisors (215071444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197864492 is a wasteful number, since it uses less digits than its factorization.

197864492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307277 (or 307275 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 197864492 is about 14066.4313882377. The cubic root of 197864492 is about 582.7146741394.

The spelling of 197864492 in words is "one hundred ninety-seven million, eight hundred sixty-four thousand, four hundred ninety-two".