197992573 has 4 divisors (see below), whose sum is σ = 199417120. Its totient is φ = 196568028.

The previous prime is 197992507. The next prime is 197992601. The reversal of 197992573 is 375299791.

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, and also an emirpimes, since its reverse is a distinct semiprime: 375299791 = 1597 ⋅235003.

It is a cyclic number.

It is not a de Polignac number, because 197992573 - 2¹⁷ = 197861501 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 197992573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197992273) 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, 712065 + ... + 712342.

It is an arithmetic number, because the mean of its divisors is an integer number (49854280).

Almost surely, 2^197992573 is an apocalyptic number.

It is an amenable number.

197992573 is a deficient number, since it is larger than the sum of its proper divisors (1424547).

197992573 is a wasteful number, since it uses less digits than its factorization.

197992573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424546.

The product of its digits is 1071630, while the sum is 52.

The square root of 197992573 is about 14070.9833700421. The cubic root of 197992573 is about 582.8403806757.

The spelling of 197992573 in words is "one hundred ninety-seven million, nine hundred ninety-two thousand, five hundred seventy-three".