196143611 has 4 divisors (see below), whose sum is σ = 196174032. Its totient is φ = 196113192.

The previous prime is 196143589. The next prime is 196143613. The reversal of 196143611 is 116341691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116341691 = 8053 ⋅14447.

It is a cyclic number.

It is not a de Polignac number, because 196143611 - 2⁶ = 196143547 is a prime.

It is a super-2 number, since 2×196143611² = 76944632272238642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196143613) 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, 1295 + ... + 19848.

It is an arithmetic number, because the mean of its divisors is an integer number (49043508).

Almost surely, 2^196143611 is an apocalyptic number.

196143611 is a deficient number, since it is larger than the sum of its proper divisors (30421).

196143611 is an equidigital number, since it uses as much as digits as its factorization.

196143611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30420.

The product of its digits is 3888, while the sum is 32.

The square root of 196143611 is about 14005.1280251199. The cubic root of 196143611 is about 581.0204104087.

The spelling of 196143611 in words is "one hundred ninety-six million, one hundred forty-three thousand, six hundred eleven".