97186192009 has 3 divisors (see below), whose sum is σ = 97186503757. Its totient is φ = 97185880262.

The previous prime is 97186191989. The next prime is 97186192021. The reversal of 97186192009 is 90029168179.

The square root of 97186192009 is 311747.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 97186192009 - 2¹⁹ = 97185667721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97186192039) 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 2 ways as a sum of consecutive naturals, for example, 155874 + ... + 467620.

Almost surely, 2^97186192009 is an apocalyptic number.

97186192009 is the 311747-th square number.

97186192009 is the 155874-th centered octagonal number.

It is an amenable number.

97186192009 is a deficient number, since it is larger than the sum of its proper divisors (311748).

97186192009 is an frugal number, since it uses more digits than its factorization.

97186192009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623494 (or 311747 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 52.

The spelling of 97186192009 in words is "ninety-seven billion, one hundred eighty-six million, one hundred ninety-two thousand, nine".