197054909 has 8 divisors (see below), whose sum is σ = 208943040. Its totient is φ = 185318496.

The previous prime is 197054873. The next prime is 197054917. The reversal of 197054909 is 909450791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197054909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 197054909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197054999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35249 + ... + 40454.

It is an arithmetic number, because the mean of its divisors is an integer number (26117880).

Almost surely, 2^197054909 is an apocalyptic number.

197054909 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

197054909 is a deficient number, since it is larger than the sum of its proper divisors (11888131).

197054909 is a wasteful number, since it uses less digits than its factorization.

197054909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75859.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 197054909 is about 14037.6247634705. The cubic root of 197054909 is about 581.9188419877.

The spelling of 197054909 in words is "one hundred ninety-seven million, fifty-four thousand, nine hundred nine".