196570786957 has 4 divisors (see below), whose sum is σ = 197164656736. Its totient is φ = 195976917180.

The previous prime is 196570786949. The next prime is 196570786987. The reversal of 196570786957 is 759687075691.

It is a happy number.

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 196570786957 - 2³ = 196570786949 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 (196570786987) 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, 296934393 + ... + 296935054.

It is an arithmetic number, because the mean of its divisors is an integer number (49291164184).

Almost surely, 2^196570786957 is an apocalyptic number.

It is an amenable number.

196570786957 is a deficient number, since it is larger than the sum of its proper divisors (593869779).

196570786957 is an equidigital number, since it uses as much as digits as its factorization.

196570786957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593869778.

The product of its (nonzero) digits is 200037600, while the sum is 70.

The spelling of 196570786957 in words is "one hundred ninety-six billion, five hundred seventy million, seven hundred eighty-six thousand, nine hundred fifty-seven".