196161659 has 4 divisors (see below), whose sum is σ = 196426416. Its totient is φ = 195896904.

The previous prime is 196161653. The next prime is 196161673. The reversal of 196161659 is 956161691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956161691 = 613 ⋅1559807.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196161659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196161653) 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, 131264 + ... + 132749.

It is an arithmetic number, because the mean of its divisors is an integer number (49106604).

Almost surely, 2^196161659 is an apocalyptic number.

196161659 is a deficient number, since it is larger than the sum of its proper divisors (264757).

196161659 is an equidigital number, since it uses as much as digits as its factorization.

196161659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264756.

The product of its digits is 87480, while the sum is 44.

The square root of 196161659 is about 14005.7723457152. The cubic root of 196161659 is about 581.0382305740.

The spelling of 196161659 in words is "one hundred ninety-six million, one hundred sixty-one thousand, six hundred fifty-nine".