196542997 has 4 divisors (see below), whose sum is σ = 224620576. Its totient is φ = 168465420.

The previous prime is 196542989. The next prime is 196543031. The reversal of 196542997 is 799245691.

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 196542997 - 2³ = 196542989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196542917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14038779 + ... + 14038792.

It is an arithmetic number, because the mean of its divisors is an integer number (56155144).

Almost surely, 2^196542997 is an apocalyptic number.

It is an amenable number.

196542997 is a deficient number, since it is larger than the sum of its proper divisors (28077579).

196542997 is an equidigital number, since it uses as much as digits as its factorization.

196542997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28077578.

The product of its digits is 1224720, while the sum is 52.

The square root of 196542997 is about 14019.3793371889. The cubic root of 196542997 is about 581.4144993689.

The spelling of 196542997 in words is "one hundred ninety-six million, five hundred forty-two thousand, nine hundred ninety-seven".