196667151 has 4 divisors (see below), whose sum is σ = 262222872. Its totient is φ = 131111432.

The previous prime is 196667087. The next prime is 196667189. The reversal of 196667151 is 151766691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151766691 = 3 ⋅50588897.

It is a cyclic number.

It is not a de Polignac number, because 196667151 - 2⁶ = 196667087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196667551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32777856 + ... + 32777861.

It is an arithmetic number, because the mean of its divisors is an integer number (65555718).

Almost surely, 2^196667151 is an apocalyptic number.

196667151 is a deficient number, since it is larger than the sum of its proper divisors (65555721).

196667151 is an equidigital number, since it uses as much as digits as its factorization.

196667151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65555720.

The product of its digits is 68040, while the sum is 42.

The square root of 196667151 is about 14023.8065802406. The cubic root of 196667151 is about 581.5368979326.

The spelling of 196667151 in words is "one hundred ninety-six million, six hundred sixty-seven thousand, one hundred fifty-one".