196218497 has 16 divisors (see below), whose sum is σ = 210833280. Its totient is φ = 182160000.

The previous prime is 196218479. The next prime is 196218527. The reversal of 196218497 is 794812691.

It is not a de Polignac number, because 196218497 - 2¹⁸ = 195956353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196218427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236279 + ... + 237107.

It is an arithmetic number, because the mean of its divisors is an integer number (13177080).

Almost surely, 2^196218497 is an apocalyptic number.

It is an amenable number.

196218497 is a deficient number, since it is larger than the sum of its proper divisors (14614783).

196218497 is a wasteful number, since it uses less digits than its factorization.

196218497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its digits is 217728, while the sum is 47.

The square root of 196218497 is about 14007.8012907094. The cubic root of 196218497 is about 581.0943439212.

The spelling of 196218497 in words is "one hundred ninety-six million, two hundred eighteen thousand, four hundred ninety-seven".