196570989 has 16 divisors (see below), whose sum is σ = 292069440. Its totient is φ = 130663440.

The previous prime is 196570987. The next prime is 196571009. The reversal of 196570989 is 989075691.

It is not a de Polignac number, because 196570989 - 2¹ = 196570987 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196570987) 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, 1122 + ... + 19859.

It is an arithmetic number, because the mean of its divisors is an integer number (18254340).

Almost surely, 2^196570989 is an apocalyptic number.

It is an amenable number.

196570989 is a deficient number, since it is larger than the sum of its proper divisors (95498451).

196570989 is a wasteful number, since it uses less digits than its factorization.

196570989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337 (or 21331 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The square root of 196570989 is about 14020.3776340012. The cubic root of 196570989 is about 581.4421000845.

The spelling of 196570989 in words is "one hundred ninety-six million, five hundred seventy thousand, nine hundred eighty-nine".